Patent DE659230C successfully refreshed from Google Patents.
Patent US3423067A successfully refreshed from Google Patents.
US3423067A
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Assignee: Koehler Aircraft Products Co
•
Filing: 1965-09-30
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Granted: 1969-01-21
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Expires: 1985-09-30
Abstract
No abstract record available.
Inventors
- 👤 George W Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:38
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/10; F16K27/00; F16K27/06; F16K27/065; F16K5/04; F16K5/0457; F16K5/0471
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |