US2437183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blower
Assignee: Individual
•
Filing: 1945-02-22
•
Granted: 1948-03-02
•
Expires: 1965-02-22
Abstract
No abstract record available.
Inventors
- 👤 Otto G Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:53
CPC Classifications
F; F04; F04D; F04D17/00; F04D17/08; F04D17/10; F04D17/12; F04D17/127; F02; F02B; F02B33/00; F02M; F02M2700/00; F02M2700/33; F02M2700/331
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US514381A
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US2116962A
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US748436A
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US864111A
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US902533A
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US1390237A
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US1657055A
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US1854749A
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US1840253A
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US1979747A
Cited
US2001817A
Cited
US2205750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-02 | 1951-09-01 | 1952-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-02 | 1955-09-01 | 1956-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-02 | 1959-09-01 | 1960-03-02 | $7700.00 | Window Closed / Lapsed |