Patent US3444464A successfully refreshed from Google Patents.
US3444464A
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Multiple aperture fittings for particle analyzing apparatus
Assignee: Coulter Electronics Inc
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Filing: 1965-11-26
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Granted: 1969-05-13
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Expires: 1985-11-26
Abstract
No abstract record available.
Inventors
- 👤 Wallace H Coulter
- 👤 Walter R Hogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:36
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/003; G01N; G01N15/00; G01N15/10; G01N15/1031; G01N15/12; G01N15/134; H; H03; H03K; H03K5/00; H03K5/22; H03K5/24; Y; Y10; Y10S; Y10S65/00; Y10S65/06; Y10T; Y10T137/00; Y10T137/4673; Y10T137/4807
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1603698A
Cited
US1911351A
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US2830945A
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US3060374A
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US3299354A
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US3258685A
Cited
US3364742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |