US2720871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston and connecting rod assembly
Assignee: MORRIS DEV Co
•
Filing: 1952-06-23
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Granted: 1955-10-18
•
Expires: 1972-06-23
Abstract
No abstract record available.
Inventors
- 👤 Donald W Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:22
CPC Classifications
F; F02; F02F; F02F3/00; F02F3/16; F02F3/20; F02F3/22; F02F3/0015; F02F3/003; F16; F16J; F16J1/00; F16J1/10; F16J1/14; F16J1/22; F01; F01M; F01M1/00; F01M1/08; F01M2001/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1413645A
Cited
US1787556A
Cited
US1856107A
Cited
US1788566A
Cited
US2304891A
Cited
US2621638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |