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US1597208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric furnace for the treatment of comminuted material
Assignee: Individual
•
Filing: 1923-04-21
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Granted: 1926-08-24
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Expires: 1943-04-21
Abstract
No abstract record available.
Inventors
- 👤 John J Naugle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:40
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1929-08-23 | 1930-02-22 | 1930-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-08-23 | 1934-02-22 | 1934-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-08-23 | 1938-02-22 | 1938-08-24 | $7700.00 | Window Closed / Lapsed |