Patent US3548205A successfully refreshed from Google Patents.
US3548205A
Expired / Lapsed
US
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Warning device
Assignee: Brk Electronics Inc
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Filing: 1968-08-08
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Granted: 1970-12-15
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Expires: 1988-08-08
Abstract
No abstract record available.
Inventors
- 👤 Wilbur L Ogden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:57
CPC Classifications
G; G08; G08B; G08B29/00; G08B29/18; G08B29/183; G08B17/00; G08B17/06; G08B17/10; G08B17/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2901740A
Cited
US3060417A
Cited
US3071713A
Cited
US3045183A
Cited
US3320602A
Cited
US3406389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |