Patent US3304069A successfully refreshed from Google Patents.
US3304069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible cooler pad
Assignee: Individual
•
Filing: 1963-12-16
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Granted: 1967-02-14
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Expires: 1983-12-16
Abstract
No abstract record available.
Inventors
- 👤 Sr Oscar C Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:48
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/04; Y; Y10; Y10S; Y10S261/00; Y10S261/11; Y10S261/41
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
IN A WATER-ABSORBENT MATERIAL FOR USE IN EVAPORATIVE COOLERS HAVING AN AIR INLET AND DISCHARGE OUTLET, THE COMBINATION COMPRISING A QUANTITY OF ABSORBENT MATERIAL SHAPED INTO A PAD TO CONFORM TO THE CONFIGURATION OF THE AIR INLET, AND A WATER SOLUBLE ENVELOPE ENCLOSING SAID PAD AND RETAINING IT IN SAID CONFIGURATION.
Claim 2
Dependent Claim
51 words
IN A WATER-ABSORBENT MATERIAL FOR USE IN EVAPORATIVE COOLERS HAVING AN AIR INLET AND DISCHARGE OUTLET, THE COMBINATION COMPRISING A QUANTITY OF ABSORBENT MATERIAL SHAPED INTO A PAD TO CONFORM TO THE CONFIGURATION OF THE AIR INLET, AND A WATER SOLUBLE ENVELOPE ENCLOSING SAID PAD AND RETAINING IT IN SAID CONFIGURATION.
References Cited (Backward Citations)
GB352960A
Cited
US2138874A
Cited
US2404479A
Cited
US2750027A
Cited
US2856166A
Cited
US3191666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |