US3487810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency signaling device
Assignee: Individual
•
Filing: 1966-12-07
•
Granted: 1970-01-06
•
Expires: 1986-12-07
Abstract
No abstract record available.
Inventors
- 👤 Clyde H Clement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:47
CPC Classifications
G; G08; G08B; G08B5/00; G08B5/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2392199A
Cited
US2786599A
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US2862531A
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US3002490A
Cited
US3142063A
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US3171128A
Cited
FR1344133A
Cited
US3174455A
Cited
US3279419A
Cited
US3310024A
Cited
US3381655A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |