Patent US2135461A successfully refreshed from Google Patents.
US2135461A
Expired / Lapsed
US
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Portable ventilating attachment for radiators
Assignee: American Radiator Co
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Filing: 1936-03-06
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Granted: 1938-11-01
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Expires: 1956-03-06
Abstract
No abstract record available.
Inventors
- 👤 Clarence M Wooley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:17
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/0233; F28D1/024; F24; F24D; F24D19/00; F24D19/008; F24D19/0085; F24D19/0087; Y; Y02; Y02B; Y02B30/00; Y10; Y10S; Y10S55/00; Y10S55/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-10-31 | 1942-05-02 | 1942-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-10-31 | 1946-05-02 | 1946-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-10-31 | 1950-05-02 | 1950-11-01 | $7700.00 | Window Closed / Lapsed |