US2659540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conduit reaming machine
Assignee: Individual
•
Filing: 1949-10-17
•
Granted: 1953-11-17
•
Expires: 1969-10-17
Abstract
No abstract record available.
Inventors
- 👤 Harry J Sketchley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:33
CPC Classifications
E; E03; E03F; E03F9/00; E03F9/002; E03F9/005; B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/043; F; F16; F16L; F16L2101/00; F16L2101/10; F16L2101/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1904885A
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US2091756A
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US2137776A
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US2223005A
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US2251291A
Cited
US2247004A
Cited
US2339762A
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US2392226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |