US3373633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscous torsional vibration dampers
Assignee: HYDRAULIC-HOUDAILLE INC BY CHANGE OF NAME FROM HOUDAILLE HYDRAULICS Inc A DEL CORP
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Filing: 1965-10-23
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Granted: 1968-03-19
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Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Charles F Desmond
- 👤 Rumsey Rollin Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:40
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/10; F16F15/16; F16F15/165; F16F15/167; Y; Y10; Y10S; Y10S277/00; Y10S277/916; Y10T; Y10T74/00; Y10T74/21; Y10T74/2121; Y10T74/2122; Y10T74/2126
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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |