US2456639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner
Assignee: BREUER ELECTRIC Manufacturing Co
•
Filing: 1946-11-29
•
Granted: 1948-12-21
•
Expires: 1966-11-29
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Lanter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:59
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/365
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1792975A
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US1907335A
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US1868519A
Cited
US2056831A
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US2114780A
Cited
US2296359A
Cited
US2327181A
Cited
US2390101A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |