Patent US3007028A successfully refreshed from Google Patents.
US3007028A
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Electrically heated device with plug-in thermostat
Assignee: National Presto Industries Inc
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Filing: 1955-06-28
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Granted: 1961-10-31
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Expires: 1975-06-28
Abstract
No abstract record available.
Inventors
- 👤 Grant E Sorenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:05
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/66; H01R13/70; H01R13/713; H01R13/7137; A; A47; A47J; A47J37/00; A47J37/10; A47J37/105; H01H; H01H37/00; H01H37/02; H01H37/04; H01H37/043; H01H37/32; H01H37/34
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |