Patent US2022249A successfully refreshed from Google Patents.
US2022249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner
Assignee: Electrolux Corp
•
Filing: 1932-10-06
•
Granted: 1935-11-26
•
Expires: 1952-10-06
Abstract
No abstract record available.
Inventors
- 👤 Lofgren Gustaf Einar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:08
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/362; A47L9/106; A47L9/108
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-11-25 | 1939-05-27 | 1939-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-25 | 1943-05-27 | 1943-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-25 | 1947-05-27 | 1947-11-26 | $7700.00 | Window Closed / Lapsed |