Patent US2823083A successfully refreshed from Google Patents.
US2823083A
Expired / Lapsed
US
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Roller bearing for rock bit cutter
Assignee: Chicago Pneumatic Tool Co LLC
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Filing: 1954-11-05
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Granted: 1958-02-11
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Expires: 1974-11-05
Abstract
No abstract record available.
Inventors
- 👤 Russell L Welton
- 👤 James B Steen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:39
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/08; E21B10/22; F; F16; F16C; F16C19/00; F16C19/22; F16C19/34; F16C19/38; F16C19/381; F16C19/36; F16C19/361; F16C19/362; F16C2352/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1909128A
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US1972256A
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AT147711B
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US2126041A
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US2177331A
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US2230442A
Cited
FR973265A
Cited
US2351357A
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US2430359A
Cited
US2513634A
Cited
US2507776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |