Patent US1743954A successfully refreshed from Google Patents.
US1743954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined beater and vacuum cleaner
Assignee: Individual
•
Filing: 1929-02-20
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Granted: 1930-01-14
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Expires: 1949-02-20
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:29
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/04; A47L9/0461; A47L9/0466; A47L9/0477; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/30
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) | 1933-01-13 | 1933-07-15 | 1934-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-01-13 | 1937-07-15 | 1938-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-01-13 | 1941-07-15 | 1942-01-14 | $7700.00 | Window Closed / Lapsed |