Patent US2777544A successfully refreshed from Google Patents.
US2777544A
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Frequency sensitive mechanical damping system
Assignee: Houdaille Industries Inc
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Filing: 1951-07-21
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Granted: 1957-01-15
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Expires: 1971-07-21
Abstract
No abstract record available.
Inventors
- 👤 Bernard E O'connor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:20
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/32; F16F9/50; F16F5/00; F16F7/00; F16F7/10; F16F2228/00; F16F2228/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR546236A
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US1492328A
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US1494135A
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US1928430A
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US2065832A
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US2334340A
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US2363867A
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US2670812A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |