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Patent US2501311A successfully refreshed from Google Patents.
US2501311A
Expired / Lapsed
US
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Rotary reel for driving and storing flexible pipe-cleaning elements
Assignee: Individual
•
Filing: 1945-01-11
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Granted: 1950-03-21
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Expires: 1965-01-11
Abstract
No abstract record available.
Inventors
- 👤 Burton William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:32
CPC Classifications
E; E03; E03F; E03F9/00; E03F9/002; E03F9/005; F; F16; F16L; F16L2101/00; F16L2101/10; F16L2101/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1367387A
Cited
US2111527A
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US2210300A
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US2272387A
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US2245823A
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US2318172A
Cited
US2297755A
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US2320309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |