US1828643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic operating mechanism
Assignee: AMERICAN FLUID MOTORS Co
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Filing: 1926-03-26
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Granted: 1931-10-20
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Expires: 1946-03-26
Abstract
No abstract record available.
Inventors
- 👤 Cannon Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:08
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/08; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/30525; F15B2211/315; F15B2211/31552; F15B2211/31558; F15B2211/3157; F15B2211/31576; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50518; F15B2211/515; F15B2211/5159; F15B2211/52; F15B2211/528; F15B2211/80; F15B2211/85; F15B2211/853
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1934-10-19 | 1935-04-20 | 1935-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-10-19 | 1939-04-20 | 1939-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-10-19 | 1943-04-20 | 1943-10-20 | $7700.00 | Window Closed / Lapsed |