US2432275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling device
Assignee: Hazeltine Research Inc
•
Filing: 1943-02-01
•
Granted: 1947-12-09
•
Expires: 1963-02-01
Abstract
No abstract record available.
Inventors
- 👤 Basil A Bels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:23
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/06; H01P1/062; H01P1/066; H01P1/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1484992A
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GB104520A
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US1870959A
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US2135221A
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US2176718A
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US2135223A
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US2331136A
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US2332529A
Cited
US2294738A
Cited
US2345019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-08 | 1951-06-09 | 1951-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-08 | 1955-06-09 | 1955-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-08 | 1959-06-09 | 1959-12-09 | $7700.00 | Window Closed / Lapsed |