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US2630732A
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Apparatus for cutting circumferential grooves
Assignee: Shellmar Products Corp
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Filing: 1950-01-19
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Granted: 1953-03-10
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Expires: 1970-01-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Piazze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:53
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/10; B23B27/12; Y; Y10; Y10T; Y10T407/00; Y10T407/12; Y10T407/19; Y10T407/1952; Y10T407/1962; Y10T407/1964; Y10T407/23; Y10T82/00; Y10T82/14; Y10T82/149; Y10T82/25; Y10T82/2531; Y10T82/2585
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US511607A
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US764145A
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US1188469A
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GB126618A
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US2164571A
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US2233724A
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US2292720A
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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) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |