Patent US3482699A successfully refreshed from Google Patents.
US3482699A
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US
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Filter and heat exchanger
Assignee: Frick Co Inc
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Filing: 1967-06-14
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Granted: 1969-12-09
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Expires: 1987-06-14
Abstract
No abstract record available.
Inventors
- 👤 Harry G Kauffman
- 👤 Thomas F Sloan
- 👤 Henry W Angle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:21
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/02; F28D7/024; B; B01; B01D; B01D27/00; B01D27/02; B01D27/08; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/50; B01D29/52; B01D29/54; B01D35/00; B01D35/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1439463A
Cited
US2354645A
Cited
US2525000A
Cited
US2829775A
Cited
US2820615A
Cited
US2952141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |