US3245353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Series spark gap initiator
Assignee: Individual
•
Filing: 1963-06-05
•
Granted: 1966-04-12
•
Expires: 1983-06-05
Abstract
No abstract record available.
Inventors
- 👤 Warren L Gilbertson
- 👤 David D Abernathy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:56
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/14; Y; Y10; Y10S; Y10S102/00; Y10S102/701
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US51671A
Cited
US97241A
Cited
US957951A
Cited
FR409370A
Cited
US1461320A
Cited
US1493881A
Cited
US2623921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |