Patent US2670532A successfully refreshed from Google Patents.
US2670532A
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Apparatus useful in assembling venetian blind bars
Assignee: LORENTZEN HARDWARE Manufacturing CORP
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Filing: 1949-09-23
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Granted: 1954-03-02
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Expires: 1969-09-23
Abstract
No abstract record available.
Inventors
- 👤 Hans K Lorentzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:11
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/266; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53909; Y10T29/53913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1404434A
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US1442376A
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US1489561A
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US1946967A
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US2127982A
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US2229233A
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US2330023A
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US2475187A
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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) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |