US2811143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic apparatus
Assignee: Richard Sutcliffe Ltd
•
Filing: 1953-12-04
•
Granted: 1957-10-29
•
Expires: 1973-12-04
Abstract
No abstract record available.
Inventors
- 👤 Baines Leslie
- 👤 Barnish Leonard Sinclair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:56
CPC Classifications
F; F01; F01B; F01B1/00; F01B1/06; F01B1/0603; F01B1/061; F01B1/0613
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US835337A
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US1042675A
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US1087240A
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US1455443A
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US1603969A
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US1533514A
Cited
US2371005A
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US2416940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |