US2740974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary metal cutting tool having a locally annealed shank portion
Assignee: Individual
•
Filing: 1954-03-15
•
Granted: 1956-04-10
•
Expires: 1974-03-15
Abstract
No abstract record available.
Inventors
- 👤 Lewis Lazarus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:49
CPC Classifications
B; B23; B23G; B23G5/00; B23G5/02; B23G5/06; B23G5/064; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/904; Y10T408/9048; Y10T408/907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1317624A
Cited
GB562657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |