US2687880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe beveling apparatus
Assignee: PERRAULT BROS
•
Filing: 1950-01-16
•
Granted: 1954-08-31
•
Expires: 1970-01-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Waterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:55
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/005; B23K7/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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CH36742A
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US1885107A
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US1998729A
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US2086764A
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US2090431A
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US2146959A
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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) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |