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Dubilier type 907 condenser

Maker:
Dubilier Condenser Co.  Search this
Measurements:
overall: 1 3/4 in x 3 in x 3/4 in; 4.445 cm x 7.62 cm x 1.905 cm
Object Name:
fixed condenser
fixed capacitor
Date made:
1927
Credit Line:
from Franklin Wingard
ID Number:
EM.241556.600
Accession number:
241556
Catalog number:
241556.600
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng4a0d5abe0-58cd-7f6c-e053-15f76fa03905
EDAN-URL:
edanmdm:nmah_1976091

Dubilier type PL-533 condenser

Maker:
Dubilier Condenser and Radio Corp.  Search this
Measurements:
overall: 8 7/8 in x 9 in x 3 1/2 in; 22.5425 cm x 22.86 cm x 8.89 cm
Object Name:
condenser
capacitor
Date made:
ca 1924
Credit Line:
from Franklin Wingard
ID Number:
EM.321617
Accession number:
241556
Catalog number:
321617
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746ac-9f5f-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1344510

Dubilier type 907 fixed condenser

Maker:
Dubilier Condenser Co.  Search this
Measurements:
unit: 2 1/2 in x 3 in x 1 1/4 in; 6.35 cm x 7.62 cm x 3.175 cm
box: 2 5/8 in x 3 1/8 in x 1 5/8 in; 6.6675 cm x 7.9375 cm x 4.1275 cm
Object Name:
fixed condenser
fixed capacitor
Date made:
1927
Credit Line:
from Franklin Wingard
ID Number:
EM.321814
Catalog number:
321814
Accession number:
241556
See more items in:
Work and Industry: Electricity
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746ab-97c0-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1347360

Apostoloff Telephone Literature

Creator:
Automatic Telephone Company, Ltd.  Search this
Corrigan, Reseda  Search this
Names:
Dubilier Condenser Corporation  Search this
Radio Corporation of America.  Search this
Apostoloff, S.B.  Search this
Margowski, Max  Search this
Former owner:
National Museum of American History (U.S.). Division of Electricity and Modern Physics  Search this
Extent:
0.3 Cubic feet
Type:
Collection descriptions
Archival materials
Legal documents
Clippings
Date:
1895-1930
Scope and Contents note:
Press clippings, 1895-1897, from British publications (some unidentified) and one French journal describing the invention and the organization of the Automatic Telephone Company, Ltd. A note on the life of Max Margowski, one of the company's organizers is included, with statements of the company accounts (one a 1901 balance sheet). A record of litigation, some of it possibly related to the Apostoloff invention, is included in the bound "Transcript of Record from the United States Circuit Court of Appeals for the Third Circuit", March 1930 (457 pages) , which details the suit of the Dubilier Condenser Corporation against the Radio Corporation of America over the previous eight years, concerning the use of certain devices in radio and telephonic communications.
Arrangement:
1 series.
Biographical/Historical note:
Russian engineer S. B. Apostoloff invented an "automatic" telephone exchange in the late 19th century. It enabled the use of telephones without requiring the services of a human operator through magnetically-actuated switching devices manipulated by the caller. The invention resulted in the organization in London of the Automatic Telephone Company, Ltd. and its reorganization two years later.
Provenance:
Collection donated by Mrs. Reseda Corrigan, November 4, 1970.
Restrictions:
Unrestricted research access on site by appointment.
Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning copyright restrictions. Other intellectual property rights may apply. Archives Center cost-recovery and use fees may apply when requesting reproductions.
Topic:
telephone -- History  Search this
Genre/Form:
Legal documents
Clippings -- 1850-1900
Citation:
Apostoloff Telephone Literature, Archives Center, National Museum of American History.
Identifier:
NMAH.AC.0581
See more items in:
Apostoloff Telephone Literature
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep8ed89f90f-ac28-4dcf-a29b-ae78abc19e08
EDAN-URL:
ead_collection:sova-nmah-ac-0581

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