US2444383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for dustless treating of material
Assignee: Individual
•
Filing: 1944-06-15
•
Granted: 1948-06-29
•
Expires: 1964-06-15
Abstract
No abstract record available.
Inventors
- 👤 Frederic E Stynler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:49
CPC Classifications
F; F26; F26B; F26B21/00; F26B21/30; F26B21/33; F26B21/333; F26B11/00; F26B11/18; F26B11/181; F26B11/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US90847A
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US394618A
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US660900A
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US958822A
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US964342A
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DE426729C
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FR661229A
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US2220193A
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US2172059A
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US2336378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-29 | 1951-12-29 | 1952-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-29 | 1955-12-29 | 1956-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-29 | 1959-12-29 | 1960-06-29 | $7700.00 | Window Closed / Lapsed |