US2524874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic relay construction
Assignee: Signal Engineering & Manufacturing Co
•
Filing: 1947-07-24
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Granted: 1950-10-10
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Expires: 1967-07-24
Abstract
No abstract record available.
Inventors
- 👤 Roscoe D Bean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:19
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/02; H01H50/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US592432A
Cited
US1106187A
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US1503981A
Cited
US1904847A
Cited
US1947641A
Cited
US2246301A
Cited
US2355047A
Cited
US2339676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |