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US2501779A
Expired / Lapsed
US
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Apparatus for applying protective coating material to the inside of a pipe or the like
Assignee: Dearborn Chemical Co
•
Filing: 1945-08-17
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Granted: 1950-03-28
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Expires: 1965-08-17
Abstract
No abstract record available.
Inventors
- 👤 Clyde I Loudenback
- 👤 Alfred C Riesen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:24
CPC Classifications
B; B05; B05C; B05C7/00; B05C7/02; Y; Y10; Y10S; Y10S118/00; Y10S118/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1758810A
Cited
US1936247A
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US1913757A
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US2022481A
Cited
US2185570A
Cited
US2133015A
Cited
FR845052A
Cited
US2194701A
Cited
US2348714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |