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Patent US2637224A successfully refreshed from Google Patents.
US2637224A
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US
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Ridge reamer
Assignee: Ammco Tools Inc
•
Filing: 1949-09-03
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Granted: 1953-05-05
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Expires: 1969-09-03
Abstract
No abstract record available.
Inventors
- 👤 Wallace F Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:34
CPC Classifications
B; B23; B23D; B23D77/00; B23D77/02; B23D77/04; B23D77/042; B23D77/14; Y; Y10; Y10S; Y10S408/00; Y10S408/709; Y10T; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8583; Y10T408/85837; Y10T82/00; Y10T82/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1927594A
Cited
US1909347A
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US1980288A
Cited
US2226015A
Cited
US2380605A
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US2487638A
Cited
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 |