Patent US2423745A successfully refreshed from Google Patents.
US2423745A
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US
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Flexible coupling
Assignee: Parker Appliance Co
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Filing: 1944-11-22
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Granted: 1947-07-08
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Expires: 1964-11-22
Abstract
No abstract record available.
Inventors
- 👤 John N Wolfram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:36
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/04; F16L27/00; F16L27/10; F16L27/1008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-07 | 1951-01-06 | 1951-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-07 | 1955-01-06 | 1955-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-07 | 1959-01-06 | 1959-07-08 | $7700.00 | Window Closed / Lapsed |