Patent EP0216031A1 successfully refreshed from Google Patents.
Patent US2775294A successfully refreshed from Google Patents.
US2775294A
Expired / Lapsed
US
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Radiation burners
Assignee: American Infra Red Radiant Co Inc
•
Filing: 1951-03-08
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Granted: 1956-12-25
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Expires: 1971-03-08
Abstract
No abstract record available.
Inventors
- 👤 Treu Rheinisch-Westfa Revision
- 👤 Franken Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:34
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/12; F23D14/14; F23D14/145; F23D2203/00; F23D2203/10; F23D2203/102; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49348
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |