Patent US5549662A successfully refreshed from Google Patents.
US2427032A
Expired / Lapsed
US
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Fan and motor housing
Assignee: Joy Manufacturing Co
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Filing: 1943-09-01
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Granted: 1947-09-09
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Expires: 1963-09-01
Abstract
No abstract record available.
Inventors
- 👤 Theodor H Troller
- 👤 Chester P Jenkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:57
CPC Classifications
F; F04; F04D; F04D19/00; F04D19/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB454456A
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US1427859A
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US1997506A
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US2073868A
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GB442469A
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US2219499A
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US2323456A
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US2298576A
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US2294586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-08 | 1951-03-10 | 1951-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-08 | 1955-03-10 | 1955-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-08 | 1959-03-10 | 1959-09-09 | $7700.00 | Window Closed / Lapsed |