Patent US2562441A successfully refreshed from Google Patents.
US2562441A
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Reverberatory furnace
Assignee: PETERSEN OVEN Co
•
Filing: 1948-05-18
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Granted: 1951-07-31
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Expires: 1968-05-18
Abstract
No abstract record available.
Inventors
- 👤 Jack L Stroman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:09
CPC Classifications
F; F27; F27B; F27B14/00; F27B14/02; F27B3/00; F27B3/04; F27B3/045; F27B3/06; F27B3/065; F27D; F27D3/00; F27D2003/0085; F27D2003/0089; F27D2003/009; F27D99/00; F27D99/0001; F27D99/0033; F27D2099/004; Y; Y10; Y10S; Y10S266/00; Y10S266/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US990765A
Cited
US1924200A
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US1970186A
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US2300141A
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US2455531A
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US2436124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |