US2808513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bistable oscillation trigger circuits
Assignee: Boeing Co
•
Filing: 1955-05-16
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Granted: 1957-10-01
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Expires: 1975-05-16
Abstract
No abstract record available.
Inventors
- 👤 John E Maynard
- 👤 Robert L Brock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:31
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/08; H03B5/12; H03B5/1203; H03B5/1231
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2354636A
Cited
US2728856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |