Patent US2727115A successfully refreshed from Google Patents.
US2727115A
Expired / Lapsed
US
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Protected thermostatic control and method of making the same
Assignee: Hawkeye Steel Products Inc
•
Filing: 1952-12-24
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Granted: 1955-12-13
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Expires: 1972-12-24
Abstract
No abstract record available.
Inventors
- 👤 Gerrit A Visser
- 👤 Adelbert H Melchert
- 👤 Jesse A Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:26
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/26; H01H35/2607; H01H35/2628; H01H37/00; H01H37/02; H01H37/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2504435A
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US2408502A
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US2563829A
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US2493190A
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US2502860A
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US2520576A
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US2632083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |