US2637237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recessing attachment
Assignee: New Britain Machine Co
•
Filing: 1947-03-18
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Granted: 1953-05-05
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Expires: 1967-03-18
Abstract
No abstract record available.
Inventors
- 👤 Donald H Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:53
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; B23B29/034; B23B29/03432; B23B29/03457; B23B29/03464; B23Q; B23Q5/00; B23Q5/22; B23Q5/52; B23Q2705/00; B23Q2705/24; Y; Y10; Y10T; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8588; Y10T82/00; Y10T82/25; Y10T82/2531; Y10T82/2541; Y10T82/2572; Y10T82/2585
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) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |