US2808904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flutter damper with air bleed
Assignee: Houdaille Industries Inc
•
Filing: 1954-08-18
•
Granted: 1957-10-08
•
Expires: 1974-08-18
Abstract
No abstract record available.
Inventors
- 👤 Bernard E O'connor
- 👤 Richard E Henrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:54
CPC Classifications
B; B64; B64C; B64C13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1072350A
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US1434197A
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GB299670A
Cited
US1825233A
Cited
US2334115A
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US2342381A
Cited
US2410176A
Cited
US2419651A
Cited
US2664255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |