Patent US3951549A successfully refreshed from Google Patents.
US3321087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipette
Assignee: Richardson Vicks Inc
•
Filing: 1964-05-01
•
Granted: 1967-05-23
•
Expires: 1984-05-01
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand T Fuge
- 👤 John K Garber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:26
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A PIPETTE FOR HARVESTING ALLANTOIC FLUID FROM PARTIALLY INCUBATED EGGS WHICH CONSISTS OF A SLENDER TUBULAR PIPETTE MEMBER BEING CLOSED AT THE LOWER END BY A SMOOTHLY FACED CONICAL POINT, SAID TUBULAR PIPETTE MEMBER HAVING A PLURALITY OF SMALL OPENINGS IN THE SECTION ADJACENT THE CONICAL END ADAPTED TO PERMIT ENTRY OF ALLANTOIC FLUID WITHOUT PERMITTING SIMULTANEOUS ENTRY OF TISSUE PARTICLES, AN OPENING IN THE UPPER SECTION OF SAID TUBULAR PIPETTE MEMBER PERMITTING ENTRY OF AIR, A SMALLER TUBULAR MEMBER EXTENDING ALONG THE AXIS SUBSTANTIALLY THE FULL LENGTH OF THE TUBULAR PIPETTE MEMBER AND MEANS FOR DETACHABLY SECURING SAID SMALLER TUBULAR MEMBER WITHIN SAID TUBULAR PIPETTE MEMBER WHEREBY SUCTION MAY BE APPLIED TO WITHDRAW ALLANTOIC FLUID ENTERING THE INTERIOR OF THE PIPETTE THE SAID SMALLER TUBULAR MEMBER TERMINATING IN AN OPEN END CUT AT AN ANGLE.
Claim 2
Dependent Claim
136 words
A PIPETTE FOR HARVESTING ALLANTOIC FLUID FROM PARTIALLY INCUBATED EGGS WHICH CONSISTS OF A SLENDER TUBULAR PIPETTE MEMBER BEING CLOSED AT THE LOWER END BY A SMOOTHLY FACED CONICAL POINT, SAID TUBULAR PIPETTE MEMBER HAVING A PLURALITY OF SMALL OPENINGS IN THE SECTION ADJACENT THE CONICAL END ADAPTED TO PERMIT ENTRY OF ALLANTOIC FLUID WITHOUT PERMITTING SIMULTANEOUS ENTRY OF TISSUE PARTICLES, AN OPENING IN THE UPPER SECTION OF SAID TUBULAR PIPETTE MEMBER PERMITTING ENTRY OF AIR, A SMALLER TUBULAR MEMBER EXTENDING ALONG THE AXIS SUBSTANTIALLY THE FULL LENGTH OF THE TUBULAR PIPETTE MEMBER AND MEANS FOR DETACHABLY SECURING SAID SMALLER TUBULAR MEMBER WITHIN SAID TUBULAR PIPETTE MEMBER WHEREBY SUCTION MAY BE APPLIED TO WITHDRAW ALLANTOIC FLUID ENTERING THE INTERIOR OF THE PIPETTE THE SAID SMALLER TUBULAR MEMBER TERMINATING IN AN OPEN END CUT AT AN ANGLE.
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) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |