Patent US2658393A successfully refreshed from Google Patents.
US2658393A
Expired / Lapsed
US
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Mechanical tuning device
Assignee: Individual
•
Filing: 1945-12-10
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Granted: 1953-11-10
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Expires: 1965-12-10
Abstract
No abstract record available.
Inventors
- 👤 John P Woods
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:50
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/18; H01J23/20; H01J23/213; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18992; Y10T74/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1218711A
Cited
US2490030A
Cited
US2319231A
Cited
US2345642A
Cited
US2380946A
Cited
US2384742A
Cited
US2408786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |