US2455531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal furnace
Assignee: PETERSEN OVEN CO
•
Filing: 1944-10-06
•
Granted: 1948-12-07
•
Expires: 1964-10-06
Abstract
No abstract record available.
Inventors
- 👤 Jack L Stroman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:04
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/2083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US591909A
Cited
US784956A
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US894393A
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US1010728A
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US1458350A
Cited
US2089742A
Cited
US1904781A
Cited
US2197216A
Cited
US2337072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |