US2687770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venetian blind tilt control
Assignee: Individual
•
Filing: 1949-10-21
•
Granted: 1954-08-31
•
Expires: 1969-10-21
Abstract
No abstract record available.
Inventors
- 👤 Walker Brooks
- 👤 Henry J Shultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:24
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/28; E06B9/30; E06B9/303
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US138761A
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US210129A
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US2175532A
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US2137444A
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US2234804A
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US2183290A
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US2283640A
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US2391709A
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US2572291A
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US2582301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |