Patent US2798113A successfully refreshed from Google Patents.
US2133141A
Expired / Lapsed
US
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Vacuum cleaner
Assignee: General Electric Co
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Filing: 1936-12-05
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Granted: 1938-10-11
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Expires: 1956-12-05
Abstract
No abstract record available.
Inventors
- 👤 Holm-Hansen Osmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:07
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/16; A47L9/1608; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L9/14; A47L9/1427; A47L9/1658; A47L9/1666
Claims Analysis
Total Claims: 0
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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) | 1941-10-10 | 1942-04-11 | 1942-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-10-10 | 1946-04-11 | 1946-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-10-10 | 1950-04-11 | 1950-10-11 | $7700.00 | Window Closed / Lapsed |