US1883218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for pulverizing and treating material
Assignee: Erie City Iron Works
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Filing: 1928-06-16
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Granted: 1932-10-18
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Expires: 1948-06-16
Abstract
No abstract record available.
Inventors
- 👤 Walter J Wohlenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:34
CPC Classifications
F; F23; F23K; F23K1/00; F23K2201/00; F23K2201/10; F23K2201/1006; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0524; Y10T83/0538; Y10T83/0548; Y10T83/0558
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) | 1935-10-18 | 1936-04-18 | 1936-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-10-18 | 1940-04-18 | 1940-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-10-18 | 1944-04-18 | 1944-10-18 | $7700.00 | Window Closed / Lapsed |