US2585990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of grinding intricate contours
Assignee: Thompson Grinder Co
•
Filing: 1947-09-08
•
Granted: 1952-02-19
•
Expires: 1967-09-08
Abstract
No abstract record available.
Inventors
- 👤 William G Baldenhofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:14
CPC Classifications
B; B24; B24B; B24B27/00; B24B1/00; Y; Y10; Y10S; Y10S451/00; Y10S451/913
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |