US2964020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for piston stroke adjustment
Assignee: Individual
•
Filing: 1959-03-09
•
Granted: 1960-12-13
•
Expires: 1979-03-09
Abstract
No abstract record available.
Inventors
- 👤 William L Defibaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:03
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/24; B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/26; B23Q5/261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |