US2671968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drier system
Assignee: Heyl and Patterson Inc
•
Filing: 1950-03-23
•
Granted: 1954-03-16
•
Expires: 1970-03-23
Abstract
No abstract record available.
Inventors
- 👤 Harry E Criner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:27
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/02; F26B17/04; F26B25/00; F26B25/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1352377A
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US1424565A
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US2014941A
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US1941560A
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US1919057A
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US2125382A
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US2132656A
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US2242918A
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US2174066A
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US2502134A
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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) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |