US2508183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grooving tool
Assignee: Individual
•
Filing: 1947-03-14
•
Granted: 1950-05-16
•
Expires: 1967-03-14
Abstract
No abstract record available.
Inventors
- 👤 Francis H Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:34
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/04; B23B2210/00; B23B2210/02; B23B2210/022; B23B2210/027; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1908; Y10T407/22; Y10T407/2222; Y10T407/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |