US3453937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic actuator with proximity sensor of locked condition
Assignee: LIONEL PACIFIC Inc
•
Filing: 1967-09-14
•
Granted: 1969-07-08
•
Expires: 1987-09-14
Abstract
No abstract record available.
Inventors
- 👤 Robert W Haberman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:19
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/26; F15B15/261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2627183A
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US2764132A
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US2988916A
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US2958137A
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US3024453A
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US2949890A
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US3020888A
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US3160836A
Cited
GB924665A
Cited
US3392279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |