Patent US2637056A successfully refreshed from Google Patents.
US2637056A
Expired / Lapsed
US
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Pipe brushing apparatus
Assignee: Individual
•
Filing: 1949-03-07
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Granted: 1953-05-05
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Expires: 1969-03-07
Abstract
No abstract record available.
Inventors
- 👤 Clifford F Morain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:58
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/023; F; F16; F16L; F16L2101/00; F16L2101/10; F16L2101/12; Y; Y10; Y10S; Y10S118/00; Y10S118/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1218005A
Cited
GB277801A
Cited
US1809725A
Cited
US2050036A
Cited
US2238720A
Cited
US2178912A
Cited
US2427129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |