Patent US3526274A successfully refreshed from Google Patents.
US3526274A
Expired / Lapsed
US
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Cross flow box cooler unit
Assignee: Ametek Inc
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Filing: 1968-06-04
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Granted: 1970-09-01
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Expires: 1988-06-04
Abstract
No abstract record available.
Inventors
- 👤 Robert John Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:15
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/06; F28F21/062; F28D; F28D7/00; F28D7/0041; F28F9/00; F28F9/007; F28F9/013; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/427; Y10S165/429; Y10S165/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |