US2525399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleanout soil fitting
Assignee: ELMER C COLLISON
•
Filing: 1949-11-02
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Granted: 1950-10-10
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Expires: 1969-11-02
Abstract
No abstract record available.
Inventors
- 👤 William J Collison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:54
CPC Classifications
E; E03; E03F; E03F9/00; F; F16; F16L; F16L2101/00; F16L2101/10; F16L2101/12; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86292; Y10T137/863
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |