US2756641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear worm thread generating machine
Assignee: Individual
•
Filing: 1952-08-21
•
Granted: 1956-07-31
•
Expires: 1972-08-21
Abstract
No abstract record available.
Inventors
- 👤 Graham H Skog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:17
CPC Classifications
B; B23; B23F; B23F19/00; B23F19/002; B23F13/00; B23F13/06; B23F21/00; B23F21/12; B23F21/122; Y; Y10; Y10T; Y10T407/00; Y10T407/17; Y10T407/174; Y10T409/00; Y10T409/10; Y10T409/101431; Y10T409/105883; Y10T409/106042; Y10T409/107473
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1128613A
Cited
US1751540A
Cited
US2052804A
Cited
US2153898A
Cited
US2348845A
Cited
US2620709A
Cited
US2616336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |