US2930455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damping devices
Assignee: Hagan Chemicals and Controls Inc
•
Filing: 1956-12-11
•
Granted: 1960-03-29
•
Expires: 1976-12-11
Abstract
No abstract record available.
Inventors
- 👤 Ray S Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:58
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/04; F16L55/045; F16L55/05; F16L55/052; F16F; F16F15/00; F16F15/02; F16F15/023; F16F15/027; F16F2230/00; F16F2230/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US729014A
Cited
US1304311A
Cited
GB255872A
Cited
US1941989A
Cited
US2503143A
Cited
US2606631A
Cited
US2581528A
Cited
US2636790A
Cited
FR1128974A
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 |