Patent US3458967A successfully refreshed from Google Patents.
US3458967A
Expired / Lapsed
US
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Apparatus for checking of impurities
Assignee: Brevetti CEA SpA
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Filing: 1966-02-18
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Granted: 1969-08-05
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Expires: 1986-02-18
Abstract
No abstract record available.
Inventors
- 👤 Arrigo Ziche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:23
CPC Classifications
B; B01; B01L; B01L99/00; B65; B65B; B65B3/00; B65B3/003; B65B3/006; G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/8803; G01N21/90; G01N21/9018; G01N21/9027; G01N33/00; G01N33/0078; G01N33/0081; G01N35/00; G01N35/02; G01N35/04; G01N2035/0401; G01N2035/0403; G01N2035/0405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |