US2685476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable discharge blower
Assignee: FE Myers and Bro Co
•
Filing: 1951-12-07
•
Granted: 1954-08-03
•
Expires: 1971-12-07
Abstract
No abstract record available.
Inventors
- 👤 Warren M Spreng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:15
CPC Classifications
A; A01; A01M; A01M7/00; A01M7/0003; A01M7/0014
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1326155A
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US2116539A
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US680280A
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US960815A
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US1669581A
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GB588592A
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US2583753A
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US2429374A
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US2515792A
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US2587240A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |