US2467492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heated processor
Assignee: Blaw Knox Co
•
Filing: 1944-11-18
•
Granted: 1949-04-19
•
Expires: 1964-11-18
Abstract
No abstract record available.
Inventors
- 👤 Arne O B Oison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:48
CPC Classifications
H; H05; H05B; H05B3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US491321A
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US672454A
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US852854A
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US890857A
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US1456136A
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US1442048A
Cited
US1916066A
Cited
US2236837A
Cited
US2281906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |