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Patent 04256451 - Upright kiln and attendant method for heating an aggregate material > Summary

US Patent

Patent No. US 04256451

Published on Mar 17, 1981

Application No. 6/121893

Filed on Feb 15, 1980

Priority Date -

Inventor/Applicants

Johnson, Jr., Allen S. - Salisbury, NC

Classification

National:5

432/14

432/16;

341/71;

432/96;

432/97;

Field of Search 8

34/171

432/14;

432/15;

432/16;

432/58;

432/79;

432/96;

432/97;

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