US2707215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety cut-outs for electrically heated appliances
Assignee: Rheostatic Co Ltd
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Filing: 1952-09-23
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Granted: 1955-04-26
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Expires: 1972-09-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Chinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:11
CPC Classifications
H; H01; H01H; H01H73/00; H01H73/22; H01H73/30
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) | 1958-04-25 | 1958-10-25 | 1959-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-25 | 1962-10-25 | 1963-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-25 | 1966-10-25 | 1967-04-26 | $7700.00 | Window Closed / Lapsed |