Patent CA484328A successfully refreshed from Google Patents.
Patent US3053182A successfully refreshed from Google Patents.
US3053182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cutting sections from well casings
Assignee: Jet Research Center Inc
•
Filing: 1960-04-04
•
Granted: 1962-09-11
•
Expires: 1980-04-04
Abstract
No abstract record available.
Inventors
- 👤 Glenn B Christopher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:46
CPC Classifications
E; E21; E21B; E21B29/00; E21B29/02; B; B26; B26F; B26F3/00; B26F3/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2708408A
Cited
US2682834A
Cited
US2918006A
Cited
US2782715A
Cited
US2935020A
Cited
US2856850A
Cited
US2923204A
Cited
US2831429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |