US2601537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination floor brush and polisher
Assignee: Individual
•
Filing: 1948-07-27
•
Granted: 1952-06-24
•
Expires: 1968-07-27
Abstract
No abstract record available.
Inventors
- 👤 Carl S Lofgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:34
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/02; A47L11/04; A47L11/4047; A47L11/4052; A47L11/4055; A47L11/4075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US811119A
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US899727A
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US922148A
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US1081240A
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GB191415199A
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GB213177A
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GB275483A
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FR683261A
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US1997913A
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GB427489A
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US2078101A
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CH192337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |