Patent US2671394A successfully refreshed from Google Patents.
US2671394A
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US
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Air distributing device
Assignee: Anemostat Corp of America
•
Filing: 1949-10-07
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Granted: 1954-03-09
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Expires: 1969-10-07
Abstract
No abstract record available.
Inventors
- 👤 Franz J Kurth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:31
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2055056A
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US1272031A
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US1401710A
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US1345195A
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FR592425A
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US1684474A
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US2106458A
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US2300088A
Cited
US2316541A
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US2378012A
Cited
US2370062A
Cited
FR883437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |