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Patent No. US 10953446
Issue Date Mar 23, 2021
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Patent 10953446 - Apparatus for forming round and flat-oval shaped HVAC ducts > Summary

US Patent

Patent No. US 10953446

Published on Mar 23, 2021

Application No. 16/688505

Filed on Nov 19, 2019

Priority Date -

Inventor/Applicants

Rossi, Jose - Guaynabo, PR US

Classification

International:4

B21B 17/14

F24F 13/02;

B21D 5/14;

B21B 37/78;

Examiner

Battula, Pradeep C

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