US2954696A
Expired / Lapsed
US
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Insulated thermal element
Assignee: Robertshaw Controls Co
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Filing: 1957-01-04
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Granted: 1960-10-04
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Expires: 1977-01-04
Abstract
No abstract record available.
Inventors
- 👤 Wilbur F Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:02
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/27535; G05D23/27541; F; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/104; F22B37/42; F22D; F22D11/00; G01; G01K; G01K1/00; G01K1/14
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) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |