US2916670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic flasher system
Assignee: Bill Jack Scientific Instrument Co
•
Filing: 1957-03-15
•
Granted: 1959-12-08
•
Expires: 1977-03-15
Abstract
No abstract record available.
Inventors
- 👤 Helmer T Pederson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:52
CPC Classifications
H; H05; H05B; H05B39/00; H05B39/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2698386A
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US2665845A
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US2806153A
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US2747111A
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US2831127A
Cited
US2772410A
Cited
US2776420A
Cited
US2827568A
Cited
US2737587A
Cited
US2829257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |