US2715325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant velocity universal joint
Assignee: Doman Helicopters Inc
•
Filing: 1952-05-13
•
Granted: 1955-08-16
•
Expires: 1972-05-13
Abstract
No abstract record available.
Inventors
- 👤 Pont Stephen Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:22
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/16; F16D3/26; F16D3/30; F16D3/34; Y; Y10; Y10S; Y10S464/00; Y10S464/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1300541A
Cited
US2088849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-15 | 1959-02-14 | 1959-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-15 | 1963-02-14 | 1963-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-15 | 1967-02-14 | 1967-08-16 | $7700.00 | Window Closed / Lapsed |