US2829363A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic dew-point apparatus
Assignee: ILLINOIS TESTING LABORATORIES
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Filing: 1955-05-31
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Granted: 1958-04-01
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Expires: 1975-05-31
Abstract
No abstract record available.
Inventors
- 👤 Alfred A Obermaier
- 👤 Edwin W Donath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:39
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/56; G01N25/66; G01N25/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2219391A
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US2411092A
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US2415776A
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US2569127A
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US2593313A
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US2654242A
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US2695400A
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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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |