Patent US2720393A successfully refreshed from Google Patents.
US2720393A
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US
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Window sash gear operator and lock
Assignee: Individual
•
Filing: 1951-05-29
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Granted: 1955-10-11
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Expires: 1971-05-29
Abstract
No abstract record available.
Inventors
- 👤 Charles N Valeutine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:20
CPC Classifications
E; E05; E05F; E05F11/00; E05F11/38; E05F11/42; E05D; E05D13/00; E05D13/04; E05D13/06; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/148; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0894; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20474; Y10T74/20492; Y10T74/20576; Y10T74/20636; Y10T74/20642
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |