Patent 11219316 - Foldable sofa-bed > Summary
US Patent
Patent Application No. US 11219316
Published on Jan 11, 2022
Application No. 15/668066
Field on Aug 3, 2017
Classification
International:
A47C 17/22
A47C 17/23;
A47C 17/28;
A47C 17/86;
A47C 17/13;