Patent US2436152A successfully refreshed from Google Patents.
US2436152A
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Portable flange serrating tool
Assignee: Individual
•
Filing: 1945-03-03
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Granted: 1948-02-17
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Expires: 1965-03-03
Abstract
No abstract record available.
Inventors
- 👤 Norvin W Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:20
CPC Classifications
B; B23; B23B; B23B3/00; B23B3/22; B23B3/26; B23B3/265; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/556; Y10T408/557; Y10T408/558; Y10T82/00; Y10T82/25; Y10T82/2522
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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AT58550B
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US1452320A
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US1787871A
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US1836078A
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US1747944A
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US1990270A
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US2011940A
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US2211134A
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US2297074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-16 | 1951-08-18 | 1952-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-16 | 1955-08-18 | 1956-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-16 | 1959-08-18 | 1960-02-17 | $7700.00 | Window Closed / Lapsed |