US2528086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay contacts of conducting rubber
Assignee: AT&T Inc
•
Filing: 1946-11-08
•
Granted: 1950-10-31
•
Expires: 1966-11-08
Abstract
No abstract record available.
Inventors
- 👤 Alfred K Schenck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:12
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/54; H01H1/00; H01H1/02; H01H1/021; H01H1/029; H01H11/00; H01H11/04; H01H11/041; H01H11/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US547537A
Cited
US1132094A
Cited
US1300022A
Cited
US1501330A
Cited
US1577981A
Cited
US2297772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |