US2904313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key-seat reamer
Assignee: Individual
•
Filing: 1957-03-12
•
Granted: 1959-09-15
•
Expires: 1977-03-12
Abstract
No abstract record available.
Inventors
- 👤 Lorenzer D V Wisenbaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:36
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/26; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/907; Y10T408/909; Y10T408/94
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2027398A
Cited
US973887A
Cited
US1758995A
Cited
US1887373A
Cited
US1937742A
Cited
US1932488A
Cited
US2717764A
Cited
US2790623A
Cited
US2727730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |