US2783405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamo-electric machine brush
Assignee: Individual
•
Filing: 1953-02-24
•
Granted: 1957-02-26
•
Expires: 1973-02-24
Abstract
No abstract record available.
Inventors
- 👤 Atkins Bernard Roy
- 👤 Lanham Michael James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:46
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/18; H01R39/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
AN ELECTRICAL CONTACT ELEMENT, COMPRISING A BODY OF ELECTRICALLY CONDUCTIVE MATERIAL HAVING INCORPORATED THEREIN BODIES OF POLYTETRAFLUOROETHYLENE AND BEING COATED WITH A FILM ESSENTIALLY OF AT LEAST ONE ORGANO-SILICON OXIDE POLYMER.
Claim 2
Dependent Claim
31 words
AN ELECTRICAL CONTACT ELEMENT, COMPRISING A BODY OF ELECTRICALLY CONDUCTIVE MATERIAL HAVING INCORPORATED THEREIN BODIES OF POLYTETRAFLUOROETHYLENE AND BEING COATED WITH A FILM ESSENTIALLY OF AT LEAST ONE ORGANO-SILICON OXIDE POLYMER.
References Cited (Backward Citations)
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US2224724A
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US2172045A
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US2310108A
Cited
US2393816A
Cited
US2425046A
Cited
GB614372A
Cited
US2531007A
Cited
US2689380A
Cited
US2662065A
Cited
US2736830A
Cited
US2656475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |