US2772574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stroke changing mechanism
Assignee: Individual
•
Filing: 1952-12-22
•
Granted: 1956-12-04
•
Expires: 1972-12-22
Abstract
No abstract record available.
Inventors
- 👤 John V Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:52
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0655; F; F16; F16K; F16K31/00; F16K31/12; F16K31/16; G05D7/00; G05D7/01; G05D7/0106; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18992
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR581932A
Cited
US947908A
Cited
US1047506A
Cited
US1439208A
Cited
US1517525A
Cited
US1640655A
Cited
US1805802A
Cited
US1829069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |