Patent US2670038A successfully refreshed from Google Patents.
US2670038A
Expired / Lapsed
US
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Venetian blind head bar organization and fittings
Assignee: LORENTZEN HARDWARE Manufacturing CORP
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Filing: 1951-10-17
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Granted: 1954-02-23
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Expires: 1971-10-17
Abstract
No abstract record available.
Inventors
- 👤 Hans K Lorentzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:04
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/28; E06B9/30; E06B9/303; E06B9/305
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2057608A
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US2064094A
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US2226623A
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US2230807A
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US2223633A
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US2421505A
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US2482036A
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US2495888A
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US2469839A
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US2614624A
Cited
US2614623A
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US2584607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |