US2477681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electropneumatic power unit
Assignee: Electrolux Corp
•
Filing: 1945-08-17
•
Granted: 1949-08-02
•
Expires: 1965-08-17
Abstract
No abstract record available.
Inventors
- 👤 Anderson Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:49
CPC Classifications
A; A47; A47L; A47L7/00; A47L7/02; Y; Y10; Y10T; Y10T408/00; Y10T408/65; Y10T408/665
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190315947A
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US983988A
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US888506A
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US1025504A
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US1938378A
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US1861924A
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US1856631A
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US2107571A
Cited
US2109621A
Cited
US2078634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |