US3572998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid sampling and pipetting apparatus
Assignee: Individual
•
Filing: 1969-05-12
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Granted: 1971-03-30
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Expires: 1989-05-12
Abstract
Abstract A PIPETTING AND SAMPLING APPARATUS FOR RECEIVING AND DISPENSING MICRO SAMPLES INCLUDING A FINE TUBULAR PISTON EXTENDABLE FROM A PUMP CHAMBER, THE LIQUID FLOWING THROUGH THE TUBULAR PISTON. A TEMPLATE AND FOLLOWER PRO- GRAM THE MOVEMENT OF THE PISTON.
Inventors
- 👤 Erik W Anthon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:44
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/10; G01N35/1081; G01N35/1083; B; B01; B01L; B01L3/00; B01L3/02; B01L3/021; B01L3/0217; B01L3/0224; G01N35/1004; G01N2035/1006
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |