Patent US3452543A successfully refreshed from Google Patents.
US3452543A
Expired / Lapsed
US
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Hydrostatic device
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1967-11-06
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Granted: 1969-07-01
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Expires: 1987-11-06
Abstract
No abstract record available.
Inventors
- 👤 Raymon L Goff
- 👤 Hollis N White Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:00
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/103; F04C2/104; B; B62; B62D; B62D5/00; B62D5/06; B62D5/09; B62D5/093; B62D5/097; F16; F16H; F16H43/00
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) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |