US1990943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for treating gases
Assignee: International Precipitation Co
•
Filing: 1929-10-28
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Granted: 1935-02-12
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Expires: 1949-10-28
Abstract
No abstract record available.
Inventors
- 👤 George H Horne
- 👤 Marcel A Lissman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:44
CPC Classifications
F; F41; F41J; F41J9/00; F41J9/16; B; B04; B04C; B04C5/00; B04C5/08; B04C5/081; B04C5/20; B04C5/24; B04C5/28; B04C9/00; G; G01; G01F; G01F3/00; G01F3/02; G01F3/20; G01F3/22; G01F3/222
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) | 1938-02-11 | 1938-08-13 | 1939-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-02-11 | 1942-08-13 | 1943-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-02-11 | 1946-08-13 | 1947-02-12 | $7700.00 | Window Closed / Lapsed |