US2430171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric rotary furnace
Assignee: —
•
Filing: —
•
Granted: 1947-11-04
•
Expires: 1964-11-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:08
CPC Classifications
F; F27; F27D; F27D11/00; F27D11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1665546A
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US741333A
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US765666A
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US1727036A
Cited
US1826847A
Cited
US1800247A
Cited
US2007676A
Cited
US2073994A
Cited
US2112492A
Cited
US2084713A
Cited
US2308332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-03 | 1951-05-05 | 1951-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-03 | 1955-05-05 | 1955-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-03 | 1959-05-05 | 1959-11-04 | $7700.00 | Window Closed / Lapsed |