Patent US2935944A successfully refreshed from Google Patents.
US2935944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosive cutting tool
Assignee: Individual
•
Filing: 1957-08-07
•
Granted: 1960-05-10
•
Expires: 1977-08-07
Abstract
No abstract record available.
Inventors
- 👤 William G Sweetman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:01
CPC Classifications
E; E21; E21B; E21B29/00; E21B29/02; B; B26; B26F; B26F3/00; B26F3/04; E21B43/00; E21B43/11; E21B43/119; E21B43/1195
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |