US2626743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air displacement rotor
Assignee: Individual
•
Filing: 1948-09-16
•
Granted: 1953-01-27
•
Expires: 1968-09-16
Abstract
No abstract record available.
Inventors
- 👤 Elmore J Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:17
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/34; F04D29/36; F04D29/362; F04D29/364; Y; Y10; Y10S; Y10S416/00; Y10S416/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE85418C
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US509143A
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US910760A
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US1072189A
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US1412313A
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US1462151A
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US2450745A
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US2383002A
Cited
US2383001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |