US2657409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rowel type pipe cleaning tool
Assignee: Individual
•
Filing: 1949-05-06
•
Granted: 1953-11-03
•
Expires: 1969-05-06
Abstract
No abstract record available.
Inventors
- 👤 Robert A J Dawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:09
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/023; F; F16; F16L; F16L2101/00; F16L2101/10; F16L2101/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US533112A
Cited
US606154A
Cited
US574422A
Cited
FR15934E
Cited
US1963304A
Cited
US2436099A
Cited
US2575816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |