Patent US3280857A successfully refreshed from Google Patents.
US3280857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sample holder
Assignee: Bausch and Lomb Inc
•
Filing: 1964-05-14
•
Granted: 1966-10-25
•
Expires: 1984-05-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles J De Grave
- 👤 Karl G Kursten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:27
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/01; G01N21/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A CUVETTE HOLDER COMPRISING, A CUVETTE DEFINING A SAMPLE CHAMBER, MEANS SUPPORTING SAID CUVETTE, AN INLET TUBE ADAPTED FOR CONNECTION TO A SAMPLE SOURCE AND AN OUTLET TUBE ADAPTED FOR CONNECTION TO A SOURCE OF VACUUM EXTENDING ABOVE SAID SAMPLE CHAMBER, MEANS FOR MOVING SAID INLET TUBE AND SAID OUTLET TUBE TO A POSITION ADJACENT TO THE BOTTOM OF SAID CUVETTE AND A POSITIN AT THE TOP OF SAID CUVETTE, VALVE MEANS INCLUDING A VENT COUPLED TO SAID OUTLET TUBE FOR SELECTIVELY VENTING SAID OUTLET TUBE TO THE ATMOSPHERE AND FOR CLOSING SAID VENT FOR CAUSING THE SOURCE OF VACUUM TO WITHDRAW A SAMPLE FROM SAID CUVETTE WHEN SAID TUBES ARE POSITIONED ADJACENT THE BOTTOM OF SAID CUVETTE AND FILL SAID CUVETTE WITH A SUBSEQUENT SAMPLE WHEN SAID TUBES ARE POSITIONED ABOVE SAID SAMPLE CHAMBER.
Claim 2
Dependent Claim
135 words
A CUVETTE HOLDER COMPRISING, A CUVETTE DEFINING A SAMPLE CHAMBER, MEANS SUPPORTING SAID CUVETTE, AN INLET TUBE ADAPTED FOR CONNECTION TO A SAMPLE SOURCE AND AN OUTLET TUBE ADAPTED FOR CONNECTION TO A SOURCE OF VACUUM EXTENDING ABOVE SAID SAMPLE CHAMBER, MEANS FOR MOVING SAID INLET TUBE AND SAID OUTLET TUBE TO A POSITION ADJACENT TO THE BOTTOM OF SAID CUVETTE AND A POSITIN AT THE TOP OF SAID CUVETTE, VALVE MEANS INCLUDING A VENT COUPLED TO SAID OUTLET TUBE FOR SELECTIVELY VENTING SAID OUTLET TUBE TO THE ATMOSPHERE AND FOR CLOSING SAID VENT FOR CAUSING THE SOURCE OF VACUUM TO WITHDRAW A SAMPLE FROM SAID CUVETTE WHEN SAID TUBES ARE POSITIONED ADJACENT THE BOTTOM OF SAID CUVETTE AND FILL SAID CUVETTE WITH A SUBSEQUENT SAMPLE WHEN SAID TUBES ARE POSITIONED ABOVE SAID SAMPLE CHAMBER.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |