Patent US3450192A successfully refreshed from Google Patents.
US3450192A
Expired / Lapsed
US
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Process and apparatus for modulating the temperature within enclosures
Assignee: Individual
•
Filing: 1967-01-20
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Granted: 1969-06-17
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Expires: 1987-01-20
Abstract
No abstract record available.
Inventors
- 👤 Harold R Hay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:33
CPC Classifications
F; F24; F24F; F24F5/00; F24F5/0046; Y; Y10; Y10S; Y10S126/00; Y10S126/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1889238A
Cited
US2595905A
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US2639551A
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US2559870A
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US2969918A
Cited
US2857634A
Cited
US3077190A
Cited
US3146774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |