Patent US3370638A successfully refreshed from Google Patents.
US3370638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston hatch actuator assembly
Assignee: Houdaille Industries Inc
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Filing: 1966-07-06
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Granted: 1968-02-27
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Expires: 1986-07-06
Abstract
No abstract record available.
Inventors
- 👤 Rumsey Rollin Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:07
CPC Classifications
A; A45; A45B; A45B19/00; A45B19/04; B; B63; B63B; B63B19/00; B63B19/12; B63B19/14; B63B19/19; B63B19/197; F; F15; F15B; F15B15/00; F15B15/02; F15B15/06
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) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |