US2556065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric control system for heating of enclosures
Assignee: ThyssenKrupp Budd Co
•
Filing: 1948-02-14
•
Granted: 1951-06-05
•
Expires: 1968-02-14
Abstract
No abstract record available.
Inventors
- 👤 Edwin M Callender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:56
CPC Classifications
B; B61; B61D; B61D27/00; B61D27/0036; G; G05; G05B; G05B11/00; G05B11/01; G05B11/012; G05B11/013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1893847A
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US2086966A
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US2236624A
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US2217797A
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US2272492A
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US2273734A
Cited
US2375988A
Cited
US2382340A
Cited
US2423541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |