US2503243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodynamic relay
Assignee: Individual
•
Filing: 1945-12-11
•
Granted: 1950-04-11
•
Expires: 1965-12-11
Abstract
No abstract record available.
Inventors
- 👤 Cohen Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:52
CPC Classifications
H; H01; H01H; H01H53/00; H01H53/01; H01H53/015
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US149797A
Cited
US1492746A
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US1548697A
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US1765381A
Cited
US1820712A
Cited
US2026994A
Cited
US2114036A
Cited
US2299671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |