US3464047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature-increase warning device
Assignee: Heron Electrical Devices Ltd
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Filing: 1966-10-11
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Granted: 1969-08-26
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Expires: 1986-10-11
Abstract
No abstract record available.
Inventors
- 👤 Andrew George Heron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:52
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/74; H01H37/76; F; F25; F25D; F25D29/00; F25D29/008; G; G08; G08B; G08B17/00; G08B17/04; G08B21/00; G08B21/18; G08B21/182; H01H35/00; H01H35/02; H01H35/14; H01H36/00
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) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |