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US2740018A
Expired / Lapsed
US
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Temperature change responsive devices
Assignee: Graviner Manufacturing Co Ltd
•
Filing: 1953-11-24
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Granted: 1956-03-27
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Expires: 1973-11-24
Abstract
No abstract record available.
Inventors
- 👤 Griffiths Rupert
- 👤 Mathisen Anders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:29
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2185433A
Cited
US2627565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |