US2840887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal cutting tools and elements
Assignee: Individual
•
Filing: 1950-11-15
•
Granted: 1958-07-01
•
Expires: 1970-11-15
Abstract
No abstract record available.
Inventors
- 👤 Donnelly Walter James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:20
CPC Classifications
B; B23; B23C; B23C5/00; B23C5/16; B23C5/20; B23C5/22; B23C5/24; B23C5/2472; B23C5/2265; B23C5/2278; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1904; Y10T407/1906; Y10T407/1908; Y10T407/1912; Y10T407/192; Y10T407/1922; Y10T407/1924
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) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |