US2596808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-sealing receptacle for separating dust from an air stream
Assignee: Electrolux Corp
•
Filing: 1949-04-06
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Granted: 1952-05-13
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Expires: 1969-04-06
Abstract
No abstract record available.
Inventors
- 👤 Lofgren Gustaf Einar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:44
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1427; A47L9/1436; A47L9/1445; A47L9/1454; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US931887A
Cited
US1266482A
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US1644096A
Cited
US1819421A
Cited
US2034217A
Cited
US2102035A
Cited
US2297994A
Cited
US2528332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |