US2900474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flasher
Assignee: Signal Stat Corp
•
Filing: 1958-05-12
•
Granted: 1959-08-18
•
Expires: 1978-05-12
Abstract
No abstract record available.
Inventors
- 👤 James W Welsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:11
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/64; H01H37/66; H01H37/32; H01H37/46; H01H37/48; H01H61/00; H01H61/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1849280A
Cited
US1981934A
Cited
US2067745A
Cited
US2300092A
Cited
US2434909A
Cited
US2491088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |