US2398268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool
Assignee: Thompson Grinder Co
•
Filing: 1942-05-20
•
Granted: 1946-04-09
•
Expires: 1962-05-20
Abstract
No abstract record available.
Inventors
- 👤 John C Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:56
CPC Classifications
B; B24; B24B; B24B47/00; B24B47/02; B24B47/04; B24B47/06; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/306664
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) | 1949-04-08 | 1949-10-08 | 1950-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-04-08 | 1953-10-08 | 1954-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-04-08 | 1957-10-08 | 1958-04-09 | $7700.00 | Window Closed / Lapsed |