US2812406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical contact
Assignee: AT&T Inc
•
Filing: 1954-03-02
•
Granted: 1957-11-05
•
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
2026-10-30 09:09
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)
US2735907A
Cited
US937284A
Cited
US1561247A
Cited
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 |