US2907101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a continuous spacer and expander for piston rings
Assignee: Muskegon Piston Ring Co
•
Filing: 1954-12-30
•
Granted: 1959-10-06
•
Expires: 1974-12-30
Abstract
No abstract record available.
Inventors
- 👤 Douglas W Hamm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:42
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/06; F16J9/064; F16J9/066; F16J9/069; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49274; Y10T29/49284; Y10T29/49789; Y10T29/49792
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1433937A
Cited
US1987784A
Cited
US1951397A
Cited
US1997534A
Cited
FR792362A
Cited
US2484288A
Cited
US2695825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |