US3103365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-control piston rings
Assignee: Individual
•
Filing: 1959-11-06
•
Granted: 1963-09-10
•
Expires: 1979-11-06
Abstract
No abstract record available.
Inventors
- 👤 Callerfelt Sven Gunnar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:18
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/06; F16J9/064; F16J9/066; F16J9/067; F16J9/069; F16J9/12; F16J9/14; F16J9/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1399841A
Cited
US1811012A
Cited
US2438163A
Cited
US2639205A
Cited
US2535597A
Cited
US2775495A
Cited
US2893798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |