Patent Assignment Details
NOTE:Results display only for issued patents and published applications.
For pending or abandoned applications please consult USPTO staff.
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| Reel/Frame: | 003807/0338 | |
| Pages: | 2 |
| | Recorded: | 10/23/1980 | | |
| Conveyance: | ASSIGNMENT OF ASSIGNORS INTEREST. |
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Total properties:
3
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Patent #:
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Issue Dt:
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12/21/1976
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Application #:
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05561872
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Filing Dt:
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03/25/1975
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Title:
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METHOD FOR THE MANUFACTURE OF AN ELECTRET FIBROUS FILTER
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Patent #:
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Issue Dt:
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12/11/1979
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Application #:
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05862768
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Filing Dt:
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12/21/1977
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Title:
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METHOD FOR MANUFACTURING A FILTER OF ELECTRICALLY CHARGED ELECTRET FIBER MATERIAL AND ELECTRET FILTERS OBTAINED ACCORDING TO SAID METHOD
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Patent #:
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Issue Dt:
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10/27/1981
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Application #:
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05929680
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Filing Dt:
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07/31/1978
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Title:
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METHOD FOR THE MANUFACTURE OF AN ELECTRET FIBROUS FILTER
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Correspondence name and address
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MINNESOTA MINING & MANUFACTURING COMPANY
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3M CENTER
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P. O. BOX 33427
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ST. PAUL, MN 55133
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