US2861155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internally oxidized electrical contact
Assignee: Gibson Electric Co
•
Filing: 1956-04-20
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Granted: 1958-11-18
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Expires: 1976-04-20
Abstract
No abstract record available.
Inventors
- 👤 Frederick R Farnham
- 👤 Jr Herbert C Graves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:21
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; H01H1/0237; H01H1/02372
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
AN ELECTRICAL CONTACT COMPRISING AN ALLOY OF 8595% SILVER, 5-15% CADMIUM, AND ZINC PRESENT IN AN AMOUNT UP TO ABOUT 50% OF THE CADMIUM PRESENT, THE CONTACT SURFACE THEREOF CONTAINING A MIXTURE OF PRECIPITATED CADMIUM OXIDE AND ZINC OXIDE.
Claim 2
Dependent Claim
39 words
AN ELECTRICAL CONTACT COMPRISING AN ALLOY OF 8595% SILVER, 5-15% CADMIUM, AND ZINC PRESENT IN AN AMOUNT UP TO ABOUT 50% OF THE CADMIUM PRESENT, THE CONTACT SURFACE THEREOF CONTAINING A MIXTURE OF PRECIPITATED CADMIUM OXIDE AND ZINC OXIDE.
References Cited (Backward Citations)
US2673167A
Cited
US2654945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |