Patent US3525378A successfully refreshed from Google Patents.
Patent US2796792A successfully refreshed from Google Patents.
US2796792A
Expired / Lapsed
US
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Machine for and method of cutting grooves in pipes
Assignee: Individual
•
Filing: 1954-07-16
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Granted: 1957-06-25
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Expires: 1974-07-16
Abstract
No abstract record available.
Inventors
- 👤 Dias Avelino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:49
CPC Classifications
B; B23; B23B; B23B5/00; B23B5/14; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2522
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US398481A
Cited
US680228A
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US899536A
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US1030981A
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US1301759A
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GB198621A
Cited
US1797944A
Cited
US1747944A
Cited
US1985541A
Cited
US2519087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |