Patent US2606085A successfully refreshed from Google Patents.
US2606085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston ring lock
Assignee: Individual
•
Filing: 1948-10-07
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Granted: 1952-08-05
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Expires: 1968-10-07
Abstract
No abstract record available.
Inventors
- 👤 Elmer C Kiekhaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:47
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/12; F16J9/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US48851A
Cited
US1198993A
Cited
GB166210A
Cited
US2192926A
Cited
GB497823A
Cited
GB496107A
Cited
US2481552A
Cited
US2481553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |