US2533286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sensitive circuits
Assignee: University of Minnesota Twin Cities
•
Filing: 1946-07-22
•
Granted: 1950-12-12
•
Expires: 1966-07-22
Abstract
No abstract record available.
Inventors
- 👤 Otto H Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:42
CPC Classifications
G; G01; G01K; G01K3/00; G01K3/005; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB144669A
Cited
US1694264A
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US2025775A
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US2175890A
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US2193578A
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US2230243A
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US2429827A
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US2278633A
Cited
US2343759A
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US2375497A
Cited
US2396196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |