US2614009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston structure
Assignee: Old Carco LLC
•
Filing: 1948-03-24
•
Granted: 1952-10-14
•
Expires: 1968-03-24
Abstract
No abstract record available.
Inventors
- 👤 John P Butterfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:00
CPC Classifications
F; F16; F16J; F16J1/00; F16J1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US695824A
Cited
US870559A
Cited
US1042505A
Cited
FR491513A
Cited
US1710721A
Cited
US2143586A
Cited
US2200199A
Cited
US2404906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |