US2962001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydro-pneumatic power mechanism
Assignee: Hartford Special Machinery Co
•
Filing: 1958-11-07
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Granted: 1960-11-29
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Expires: 1978-11-07
Abstract
No abstract record available.
Inventors
- 👤 Robert D Morton
- 👤 Edward G Grohoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:13
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/06; F15B11/072; F15B11/076; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20576; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/30525; F15B2211/32; F15B2211/329; F15B2211/40; F15B2211/405; F15B2211/40576; F15B2211/40584; F15B2211/415; F15B2211/41527; F15B2211/41536; F15B2211/42; F15B2211/421; F15B2211/423; F15B2211/424; F15B2211/426; F15B2211/428; F15B2211/47; F15B2211/473; F15B2211/60; F15B2211/635; F15B2211/6355; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7055; F15B2211/75; F15B2211/80; F15B2211/885; F15B2211/8855
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA462136A
Cited
US2676572A
Cited
US2715389A
Cited
US2655058A
Cited
US2857789A
Cited
US2765808A
Cited
US2781026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |