US2436099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe cleaning machine
Assignee: CRUTCHER ROLFS CUMMINGS COMPAN
•
Filing: 1942-02-20
•
Granted: 1948-02-17
•
Expires: 1962-02-20
Abstract
No abstract record available.
Inventors
- 👤 James D Cummings
- 👤 Milton P Laurent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:41
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1020789A
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US1176452A
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US1375979A
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US1909882A
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US1941002A
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US1957792A
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US2041337A
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US1880771A
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US2193971A
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US2307449A
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US2302196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-16 | 1951-08-18 | 1952-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-16 | 1955-08-18 | 1956-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-16 | 1959-08-18 | 1960-02-17 | $7700.00 | Window Closed / Lapsed |