Patent US2566640A successfully refreshed from Google Patents.
US2566640A
Expired / Lapsed
US
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Combination window and venetian blind
Assignee: Individual
•
Filing: 1947-06-28
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Granted: 1951-09-04
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Expires: 1967-06-28
Abstract
No abstract record available.
Inventors
- 👤 George R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:24
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/264
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2000511A
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US2179572A
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US2170877A
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US2179763A
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US2249641A
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US2305445A
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US2434786A
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US2415222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |