Patent US3198256A successfully refreshed from Google Patents.
US3198256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet junk basket
Assignee: Bowen Tools Inc
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Filing: 1961-10-09
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Granted: 1965-08-03
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Expires: 1981-10-09
Abstract
No abstract record available.
Inventors
- 👤 Ii John H Kirby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:35
CPC Classifications
E; E21; E21B; E21B27/00; E21B27/005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
AN UPPER MANDREL ADAPTED FOR USE WITH A JUNK BASKET, SAID UPPER MANDREL HAVING A BORE OF SUBSTANTIALLY CONSTANT DIAMETER THROUGHOUT THE AXIAL LENGTH THEREOF WITH THE OUTER PERIPHERY OF SAID UPPER MANDREL BEING GREATER IN THE UPPER PORTION THAN THE LOWER PORTION, AND A PLURALITY OF VANES COUPLED TO SAID UPPER MANDREL NEAR THE POINT OF CHANGE IN OUTER PERIPHERY, THE REDUCED PERIPHERY SECTION HAVING A POLYGONAL SHAPED CROSS-SECTION TO PROVIDE A PLURALITY OF CAHMBERS WHEN A CYLINDRICAL, CIRCULR MEMBER IS POSITIONED AROUND THE REDUCED PERIPHERY SECTION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |