US3076507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical cutting method and apparatus for use in wells
Assignee: Individual
•
Filing: 1958-05-16
•
Granted: 1963-02-05
•
Expires: 1978-05-16
Abstract
No abstract record available.
Inventors
- 👤 William G Sweetman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:32
CPC Classifications
E; E21; E21B; E21B29/00; E21B29/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
8 words
THE METHOD OF CUTTING AN OBJECT HAVING METALLIC
References Cited (Backward Citations)
US2144208A
Cited
US2302567A
Cited
US2451422A
Cited
US2629445A
Cited
US2571636A
Cited
US2642656A
Cited
US2680486A
Cited
US2692023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |