US2633374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling member
Assignee: Reed Roller Bit Co
•
Filing: 1948-10-01
•
Granted: 1953-03-31
•
Expires: 1968-10-01
Abstract
No abstract record available.
Inventors
- 👤 Elvin G Boice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:58
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/08; E; E21; E21B; E21B17/00; E21B17/02; E21B17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1268980A
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US1344221A
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US1770852A
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US1941115A
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US1917939A
Cited
US1993269A
Cited
US2033122A
Cited
US2034808A
Cited
US2224145A
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US2279831A
Cited
US2460666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |