Patent US3236389A successfully refreshed from Google Patents.
US2983883A
Expired / Lapsed
US
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Micro wave valves
Assignee: General Precision Inc
•
Filing: 1953-01-15
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Granted: 1961-05-09
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Expires: 1973-01-15
Abstract
No abstract record available.
Inventors
- 👤 Charles H Luhrs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:49
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32; H01P1/36; H01P1/375
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) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |