US2930608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid spring
Assignee: Cleveland Pneumatic Industries Inc
•
Filing: 1956-04-04
•
Granted: 1960-03-29
•
Expires: 1976-04-04
Abstract
No abstract record available.
Inventors
- 👤 Walter H Hogan
- 👤 Anthony V Camino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 23:40
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/32; F16F9/36; F16F9/365; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204; F16J15/46; F16J15/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2323352A
Cited
US2372907A
Cited
US2513533A
Cited
US2643112A
Cited
FR1015020A
Cited
US2758857A
Cited
US2772900A
Cited
US2774619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |