Patent US2812925A successfully refreshed from Google Patents.
US2812925A
Expired / Lapsed
US
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Overhead type unit heater
Assignee: Young Radiator Co
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Filing: 1956-05-25
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Granted: 1957-11-12
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Expires: 1976-05-25
Abstract
No abstract record available.
Inventors
- 👤 Fred M Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:04
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/0233; F28D1/024; Y; Y10; Y10S; Y10S165/00; Y10S165/228; Y10S165/302; Y10S165/303; Y10S165/304; Y10S165/306
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) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |