US2833116A
Expired / Lapsed
US
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Hydraulic drive system
Assignee: Individual
•
Filing: 1956-06-15
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Granted: 1958-05-06
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Expires: 1976-06-15
Abstract
No abstract record available.
Inventors
- 👤 Hugh M Rush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:02
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/02; E01H1/05; E01H1/056; E01H1/053; F; F15; F15B; F15B11/00; F15B11/16; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20546; F15B2211/30; F15B2211/305; F15B2211/3056; F15B2211/3059; F15B2211/30595; F15B2211/40; F15B2211/405; F15B2211/40515; F15B2211/40523; F15B2211/4053; F15B2211/45; F15B2211/455; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50518; F15B2211/515; F15B2211/5157; F15B2211/55; F15B2211/70; F15B2211/71; F15B2211/7135; F15B2211/7142; F15B2211/78; F15B2211/781; Y; Y10; Y10T; Y10T24/00; Y10T24/15
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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |