US2276844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner
Assignee: General Electric Co
•
Filing: 1937-11-10
•
Granted: 1942-03-17
•
Expires: 1957-11-10
Abstract
No abstract record available.
Inventors
- 👤 Holm-Hansen Osmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:40
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/16; A47L9/165; A47L5/00; A47L5/12; A47L5/14; A47L5/22; A47L5/36; A47L5/365; A47L9/1658; A47L9/1666; A47L9/22; Y; Y10; Y10S; Y10S55/00; Y10S55/03
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) | 1945-03-16 | 1945-09-15 | 1946-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-03-16 | 1949-09-15 | 1950-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-03-16 | 1953-09-15 | 1954-03-17 | $7700.00 | Window Closed / Lapsed |