Patent US2817418A successfully refreshed from Google Patents.
US2817418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanisms for locking a rotating piece with respect to a cylindrical pivot
Assignee: Individual
•
Filing: 1953-05-29
•
Granted: 1957-12-24
•
Expires: 1973-05-29
Abstract
No abstract record available.
Inventors
- 👤 Vial Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:02
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/025; B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/28; E21C; E21C25/00; E21C25/64; F; F16; F16B; F16B1/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US608561A
Cited
US840992A
Cited
US1437734A
Cited
US1472751A
Cited
DE756241C
Cited
US2389558A
Cited
US2638326A
Cited
DE818485C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |