US2668418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phasing of engines, motors, and the like
Assignee: Individual
•
Filing: 1951-07-26
•
Granted: 1954-02-09
•
Expires: 1971-07-26
Abstract
No abstract record available.
Inventors
- 👤 William A Tolson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:56
CPC Classifications
G; G05; G05D; G05D13/00; B; B63; B63H; B63H21/00; B63H21/21; B63H21/213; B63H23/00; B63H23/28; F; F02; F02D; F02D25/00; F02D25/02; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19605
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |