US2471687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamic damper counterbalance
Assignee: RTX Corp
•
Filing: 1945-04-11
•
Granted: 1949-05-31
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Expires: 1965-04-11
Abstract
No abstract record available.
Inventors
- 👤 Gifford I Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:31
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/10; F16F15/14; B; B64; B64C; B64C27/00; B64C27/001; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2173; Y10T74/2183; Y10T74/2184
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1756898A
Cited
FR768000A
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US2361710A
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US1969077A
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US2048326A
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US2242457A
Cited
US2383516A
Cited
US2247034A
Cited
US2297815A
Cited
US2349187A
Cited
US2370880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |