Patent US1823726A successfully refreshed from Google Patents.
US1823726A
Expired / Lapsed
US
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Bag support for vacuum cleaners
Assignee: ELECTRIC VACUUM CLEANER CO
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Filing: 1927-06-06
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Granted: 1931-09-15
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Expires: 1947-06-06
Abstract
No abstract record available.
Inventors
- 👤 Jesse F Carson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:48
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/149; A47L5/00; A47L5/12; A47L5/22; A47L5/24; A47L5/26; A47L5/28; A47L5/30; A47L9/1427; Y; Y10; Y10S; Y10S15/00; Y10S15/08
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) | 1934-09-14 | 1935-03-16 | 1935-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-09-14 | 1939-03-16 | 1939-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-09-14 | 1943-03-16 | 1943-09-15 | $7700.00 | Window Closed / Lapsed |