Patent US2747274A successfully refreshed from Google Patents.
US2747274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power operated pipe cutter
Assignee: SPRING LOAD Manufacturing CORP
•
Filing: 1953-05-18
•
Granted: 1956-05-29
•
Expires: 1973-05-18
Abstract
No abstract record available.
Inventors
- 👤 Ralph J Willard
- 👤 Riley T Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:28
CPC Classifications
B; B23; B23D; B23D21/00; B23D21/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US514577A
Cited
US1310957A
Cited
US1325173A
Cited
US888724A
Cited
US1029265A
Cited
US1097152A
Cited
US1493452A
Cited
US1985541A
Cited
US2567833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |