Patent US2858770A successfully refreshed from Google Patents.
US2858770A
Expired / Lapsed
US
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Dual chambered fluid power device
Assignee: TOLBERT C BUSHONG
•
Filing: 1956-02-29
•
Granted: 1958-11-04
•
Expires: 1976-02-29
Abstract
No abstract record available.
Inventors
- 👤 Stephen G Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:30
CPC Classifications
F; F01; F01C; F01C9/00; F01C9/007
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |