US3211433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic stirring apparatus
Assignee: Individual
•
Filing: 1963-12-02
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Granted: 1965-10-12
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Expires: 1983-12-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Chrostowski
- 👤 Louis R Celli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:20
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/45; B01F33/452
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
100 words
A MAGNETIC STIRRING APPARATUS FOR FLAMMABLE, EXPLOSIVE, OR HIGHLY VOLATILE LIQUIDS COMPRISING A MAGNETIZED STIRRING BAR ADAPTED TO BE PLACED IN A QUANTITY OF SAID LIQUIDS WITHIN A CONTAINER, MAGNETIC COUPLING MEANS FOR SPINNING SAID BAR BY IMPARTING A TORQUE THERETO, SAID MAGNETIC COUPLING MEANS BEING HOUSED IN A CANISTER SO ARRANGED AND CONSTRUCTED AS TO PROVIDE A SUPPORT FOR SAID CONTAINER, AND SAID CANISTER BEING PROVIDED WITH A PLURALITY OF GAS OUTLET PORTS AT ITS SUPPORTING SURFACE, WHEREBY SAID CONTAINER MAY BE BATHED IN A CONTROLLED ATMOSPHERE OF INERT GAS WHEN A SOURCE THEREOF IS CONNECTED TO SAID CANISTER.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |