US4197942B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4197942B1 - - Google Patents
Assignee: Picker Corp
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Filing: 1977-11-07
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Granted: 1984-09-04
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Expires: 1997-11-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:32
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/02; G03D3/06; B; B01; B01F; B01F33/00; B01F33/80; B01F33/84; B01F35/00; B01F35/20; B01F35/21; B01F35/211; B01F35/2112; B01F35/71; B01F35/713; B01F35/7137; B01F35/717; B01F35/71805; B01F35/80; B01F35/88; B01F35/882; B01F25/00; B01F2025/91; B01F2025/914; B01F2101/00; B01F2101/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |