US3524498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling apparatus
Assignee: National Gypsum Co
•
Filing: 1968-04-10
•
Granted: 1970-08-18
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Expires: 1988-04-10
Abstract
No abstract record available.
Inventors
- 👤 Richard E Galer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:02
CPC Classifications
F; F27; F27D; F27D15/00; F27D15/02; F27D15/0206; F28; F28D; F28D7/00; F28D7/16; F28D7/163; F28D7/1638; F28D7/1669; F28F; F28F9/00; F28F9/02; F28F9/0229; F28D21/00; F28D2021/0019; F28D2021/0045; Y; Y10; Y10S; Y10S165/00; Y10S165/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB383334A
Cited
US2185929A
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US2468903A
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US2884373A
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US2911198A
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US2986454A
Cited
US3026626A
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US3264751A
Cited
US3206865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |