US2811109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
U-shaped annular fluid pressure bearing
Assignee: Allis Chalmers Corp
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Filing: 1954-09-24
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Granted: 1957-10-29
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Expires: 1974-09-24
Abstract
No abstract record available.
Inventors
- 👤 Edward F Brill
- 👤 Richard M Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:41
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/04; F04D29/046; F04D29/047; F04D29/041; F04D29/0413; F16; F16C; F16C32/00; F16C32/06; F16C32/0681; F16C32/0696
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) | 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 |