US2655734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling humidity conditions in bulk materials
Assignee: AMERICAN INSTR Co
•
Filing: 1948-11-03
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Granted: 1953-10-20
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Expires: 1968-11-03
Abstract
No abstract record available.
Inventors
- 👤 Carlton E Ohlheiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:18
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/048; F; F26; F26B; F26B25/00; F26B25/22; F26B9/00; F26B9/06; F26B9/063; F26B2200/00; F26B2200/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2444588A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |