Patent US2985899A successfully refreshed from Google Patents.
US2985899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified tap shank and adapter for holding the tap in a chuck
Assignee: Individual
•
Filing: 1957-02-25
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Granted: 1961-05-30
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Expires: 1977-02-25
Abstract
No abstract record available.
Inventors
- 👤 Forbes L Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:14
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/44; B23G1/48; B23G2210/00; B23G2210/04; B23G2240/00; B23G2240/20; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/904; Y10T408/9048; Y10T408/907; Y10T408/94; Y10T408/95
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US458408A
Cited
US500292A
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US1144425A
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US1539439A
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US2383991A
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US2389548A
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US2529988A
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US2465541A
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US2642137A
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US2643142A
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US2793377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |