Patent US3506818A successfully refreshed from Google Patents.
US3506818A
Expired / Lapsed
US
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Digital integrator with automatic base line correction
Assignee: Beckman Coulter Inc
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Filing: 1966-06-06
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Granted: 1970-04-14
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Expires: 1986-06-06
Abstract
No abstract record available.
Inventors
- 👤 Douglas H Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:50
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/18; G06G7/184; G06G7/186; H; H03; H03M; H03M1/00; G06F; G06F2218/00; G06F2218/08; G06F2218/10; H03M1/12; H03M1/124
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) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |