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Patent US2845653A successfully refreshed from Google Patents.
US2845653A
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Releasable couplings
Assignee: ARCHER WORKS ENGINEERING Co Ltd
•
Filing: 1954-09-29
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Granted: 1958-08-05
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Expires: 1974-09-29
Abstract
No abstract record available.
Inventors
- 👤 Nelson Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:22
CPC Classifications
A; A47; A47B; A47B5/00; A47B5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US350031A
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US498178A
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US693546A
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US834411A
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US1162236A
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US1090687A
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US1538877A
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US1648086A
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US1632116A
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US1607887A
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US1893592A
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US1973829A
Cited
US2658233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |