US2665698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venetian blind cleaning apparatus
Assignee: Individual
•
Filing: 1949-02-23
•
Granted: 1954-01-12
•
Expires: 1969-02-23
Abstract
No abstract record available.
Inventors
- 👤 Leo C Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:56
CPC Classifications
A; A47; A47L; A47L4/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1670611A
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US397533A
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US832818A
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US803274A
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US872314A
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US875163A
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US1066371A
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US1447305A
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US2279691A
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US2266126A
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US2425620A
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GB581777A
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US2508999A
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US2558628A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |