US2984225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston and cylinder apparatus
Assignee: Individual
•
Filing: 1959-08-18
•
Granted: 1961-05-16
•
Expires: 1979-08-18
Abstract
No abstract record available.
Inventors
- 👤 Young David Horace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:52
CPC Classifications
F; F01; F01L; F01L23/00; F04; F04B; F04B9/00; F04B9/08; F04B9/12; F04B9/123; F04B9/127; F16; F16N; F16N13/00; F16N13/02; F16N13/06; F16N13/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |