Patent US2441533A successfully refreshed from Google Patents.
US2441533A
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Assignee: New Britain Machine Co
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Filing: 1941-05-20
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Granted: 1948-05-11
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Expires: 1961-05-20
Abstract
No abstract record available.
Inventors
- 👤 Donald H Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:26
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/10; B23Q35/101; B23Q35/102; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/50; B23Q1/54; B23Q1/5468; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5178; Y10T409/00; Y10T409/50; Y10T409/508036; Y10T409/5082; Y10T409/508364; Y10T82/00; Y10T82/13; Y10T82/135; Y10T82/25; Y10T82/2531; Y10T82/2549
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US47954A
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US463750A
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US513827A
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US649907A
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US695980A
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US892387A
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US1546062A
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US2085685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-11 | 1951-11-10 | 1952-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-11 | 1955-11-10 | 1956-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-11 | 1959-11-10 | 1960-05-11 | $7700.00 | Window Closed / Lapsed |