US2793018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace for the treatment of substances by means of the energy supplied by a concentrated radiation
Assignee: Centre National de la Recherche Scientifique
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Filing: 1953-07-24
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Granted: 1957-05-21
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Expires: 1973-07-24
Abstract
No abstract record available.
Inventors
- 👤 Trombe Felix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:14
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/122; B01J19/127; F; F24; F24S; F24S20/00; F24S20/20; F24S20/30; Y; Y02; Y02E; Y02E10/00; Y02E10/40
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) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |