US3451315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow-piston actuators
Assignee: Houdaille Industries Inc
•
Filing: 1966-08-22
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Granted: 1969-06-24
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Expires: 1986-08-22
Abstract
No abstract record available.
Inventors
- 👤 Rollin Douglas Rumsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:12
CPC Classifications
B; B63; B63B; B63B19/00; B63B19/12; B63B19/14; B63B19/19; B63B19/197; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631; Y10T403/32803
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US247813A
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US399524A
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FR372817A
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GB396407A
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GB442006A
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US2409842A
Cited
US2865215A
Cited
US3059683A
Cited
US3132568A
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US3288202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |