Patent US2452232A successfully refreshed from Google Patents.
US2452232A
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US
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Compressor
Assignee: AIR FLO COMPRESSOR Co
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Filing: 1944-08-24
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Granted: 1948-10-26
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Expires: 1964-08-24
Abstract
No abstract record available.
Inventors
- 👤 William V Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:23
CPC Classifications
F; F04; F04B; F04B27/00; F04B27/04; F01; F01B; F01B1/00; F04B39/00; F04B39/12; Y; Y10; Y10S; Y10S123/00; Y10S123/01; Y10S123/06; Y10S123/07; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18208; Y10T74/21; Y10T74/2142; Y10T74/2143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-26 | 1952-04-26 | 1952-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-26 | 1956-04-26 | 1956-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-26 | 1960-04-26 | 1960-10-26 | $7700.00 | Window Closed / Lapsed |