US2278738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutter
Assignee: Nachi Machining Technology Co
•
Filing: 1939-11-13
•
Granted: 1942-04-07
•
Expires: 1959-11-13
Abstract
No abstract record available.
Inventors
- 👤 Walter S Praeg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:56
CPC Classifications
B; B23; B23C; B23C5/00; B23C5/02; B23C5/08; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1952; Y10T407/1962; Y10T407/24
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) | 1945-04-06 | 1945-10-06 | 1946-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-04-06 | 1949-10-06 | 1950-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-04-06 | 1953-10-06 | 1954-04-07 | $7700.00 | Window Closed / Lapsed |