Patent US3122316A successfully refreshed from Google Patents.
US2771685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal pipe calipering tools
Assignee: Individual
•
Filing: 1952-06-12
•
Granted: 1956-11-27
•
Expires: 1972-06-12
Abstract
No abstract record available.
Inventors
- 👤 John C Kinley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:18
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2102080A
Cited
US2121614A
Cited
US2150070A
Cited
US2267110A
Cited
US2544609A
Cited
US2699001A
Cited
US2497990A
Cited
US2607128A
Cited
US2596924A
Cited
US2695456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |