US2775495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spacer for piston rings
Assignee: SPX Technologies Inc
•
Filing: 1954-11-01
•
Granted: 1956-12-25
•
Expires: 1974-11-01
Abstract
No abstract record available.
Inventors
- 👤 Holly M Olson
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; F16J9/069; F16J9/12; F16J9/14; F16J9/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2220947A
Cited
US2303798A
Cited
US2602715A
Cited
US2635022A
Cited
US2686093A
Cited
US2695825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |