Patent US2764042A successfully refreshed from Google Patents.
US2764042A
Expired / Lapsed
US
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Device for making tools with shank and spiral undercut grooves
Assignee: Individual
•
Filing: 1955-10-03
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Granted: 1956-09-25
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Expires: 1975-10-03
Abstract
No abstract record available.
Inventors
- 👤 Fritz P Gotze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:15
CPC Classifications
B; B21; B21K; B21K5/00; B21K5/02; B21K5/04; B21C; B21C23/00; B21C23/02; B21C23/04; B21C23/08; B21C23/10; B21C23/14; B21C23/147; B21C25/00; B21C25/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |