US2725936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure operated pipe cutting or milling apparatus with floating valve
Assignee: Individual
•
Filing: 1953-03-06
•
Granted: 1955-12-06
•
Expires: 1973-03-06
Abstract
No abstract record available.
Inventors
- 👤 Fred A Hester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:54
CPC Classifications
E; E21; E21B; E21B29/00; E21B29/002; E21B29/005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE21824E
Cited
DE412023C
Cited
US1632015A
Cited
US2218766A
Cited
US2299528A
Cited
US2482674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |