US3038561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary flutter damper
Assignee: HOUDILLE IND Inc
•
Filing: 1959-11-12
•
Granted: 1962-06-12
•
Expires: 1979-11-12
Abstract
No abstract record available.
Inventors
- 👤 Rumsey Rollin Douglas
- 👤 John C Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:08
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/10; F16F9/14; F16F9/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20882E
Cited
US1778905A
Cited
US2009676A
Cited
US2009677A
Cited
US1881450A
Cited
US2043465A
Cited
US2060554A
Cited
US2516781A
Cited
US2516782A
Cited
US2814362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-11 | 1965-12-11 | 1966-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-11 | 1969-12-11 | 1970-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-11 | 1973-12-11 | 1974-06-12 | $7700.00 | Window Closed / Lapsed |