Patent US940192A successfully refreshed from Google Patents.
Patent US3159384A successfully refreshed from Google Patents.
US3159384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agitator for laboratory tubes and flasks
Assignee: Bio Science Laboratories
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Filing: 1962-07-02
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Granted: 1964-12-01
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Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 John E Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:04
CPC Classifications
B; B01; B01F; B01F31/00; B01F31/20; B01F31/22; B01F2101/00; B01F2101/23; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18544
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
IN A LABORATORY MIXER: A SUPPORT HAVING FOOT MEAND DEFINING A CONTACT PLANE; A FLAT AGITATING PLATE SUSPENDED FROM THE SUPPORT AND HAVING A PART PROJECTING LATERALLY BEYOND SAID SUPPORT AND EXTENDING IN SPACED PARALLEL RELATIONSHIP TO SAID CONTACT PLANE; SAID PART HAVING AN EDGE REMOTE FROM SAID SUPPORT, THERE BEING A RECESS EXTENDING INWARDLY FROM SAID EDGE AND HAVING TAPERED OPERATIVE SIDES CONVERGING INWARDLY FOR RECEIVING A TUBE OR FLASK; AND MOTIVE MEANS CARRIED BY SAID SUPPORT FOR CYCLICALLY SHIFTING SAID AGITATING MEMBER THROUGH A SMALL DISTANCE IN ITS PLANE TO MOVE THE LOCATION OF SAID RECESS FOR IMPARTING AGITATING MOTION TO A TUBE OR FLASK PRESSED AGAINST THE TAPERED SIDES OF SAID RECESS.
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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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |