US2933257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature control system
Assignee: Partlow Corp
•
Filing: 1956-04-30
•
Granted: 1960-04-19
•
Expires: 1976-04-30
Abstract
No abstract record available.
Inventors
- 👤 James K Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:48
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/06; F23N5/067; G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/125; G05D23/126; G05D23/127; G05D23/128; F23N2235/00; F23N2235/12; F23N2235/20; F23N2235/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1949030A
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DE455717C
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US1812346A
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US1804849A
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US2178974A
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US2118886A
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US2247060A
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US2328323A
Cited
US2504689A
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US2539106A
Cited
US2676757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |