Patent US3479924A successfully refreshed from Google Patents.
US3479924A
Expired / Lapsed
US
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Piston type operator with power checking
Assignee: Stanley Works
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Filing: 1968-04-19
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Granted: 1969-11-25
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Expires: 1988-04-19
Abstract
No abstract record available.
Inventors
- 👤 Harold W Ferguson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:02
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/08; E; E05; E05F; E05F15/00; E05F15/50; E05F15/56; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
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) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |