US2374879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular tool
Assignee: New Britain Machine Co
•
Filing: 1941-03-14
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Granted: 1945-05-01
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Expires: 1961-03-14
Abstract
No abstract record available.
Inventors
- 👤 Donald H Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:11
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/08; B23B27/083; Y; Y10; Y10T; Y10T407/00; Y10T407/20; Y10T407/22; Y10T407/2222; Y10T407/2238; Y10T407/224; Y10T407/25
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) | 1948-04-30 | 1948-10-30 | 1949-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-30 | 1952-10-30 | 1953-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-30 | 1956-10-30 | 1957-05-01 | $7700.00 | Window Closed / Lapsed |