Patent US2812406A successfully refreshed from Google Patents.
US2812406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical contact
Assignee: AT&T Inc
•
Filing: 1954-03-02
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Granted: 1957-11-05
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Expires: 1974-03-02
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Egan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:13
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/018; H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
AN ELECTRICAL CONTACT COMPRISING AN EXPOSED LAYER OF ALLOY INCLUDING BY WEIGHT AT LEAST 50 PERCENT GOLD AND A NEGLIGIBLE AMOUNT OF METAL FROM THE GROUP CONSISTING OF PLATINUM, PALLADIUM, IRIDIUM, RHODIUM, RUTHENIUM AND OSMIUM AND A LAYER OF ALLOY THEREUNDER INCLUDING BY WEIGHT AT LEAST 50 PERCENT METAL OF SAID GROUP.
Claim 2
Dependent Claim
52 words
AN ELECTRICAL CONTACT COMPRISING AN EXPOSED LAYER OF ALLOY INCLUDING BY WEIGHT AT LEAST 50 PERCENT GOLD AND A NEGLIGIBLE AMOUNT OF METAL FROM THE GROUP CONSISTING OF PLATINUM, PALLADIUM, IRIDIUM, RHODIUM, RUTHENIUM AND OSMIUM AND A LAYER OF ALLOY THEREUNDER INCLUDING BY WEIGHT AT LEAST 50 PERCENT METAL OF SAID GROUP.
References Cited (Backward Citations)
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Cited
US937284A
Cited
US1561247A
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US2241262A
Cited
US2300286A
Cited
US2600175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |