Patent US935503A successfully refreshed from Google Patents.
Patent US2637488A successfully refreshed from Google Patents.
US2637488A
Expired / Lapsed
US
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Compressor
Assignee: FREDRIC FLADER Inc
•
Filing: 1946-06-13
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Granted: 1953-05-05
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Expires: 1966-06-13
Abstract
No abstract record available.
Inventors
- 👤 Lee M Krouse
- 👤 Jess H Nourse
- 👤 Helmut R Katzmann
- 👤 Fred A Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:01
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/06; F01D5/066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US799062A
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US873241A
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US1886414A
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US2213940A
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US2305768A
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GB543985A
Cited
US2371706A
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US2357618A
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US2415847A
Cited
US2400711A
Cited
US2415033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |