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https://breuer.syr.edu/Documents/Detail/patent-specification-416758.-spring-seat-and-reclining-chair/244312
Patent Specification 416758. Spring Seat and Reclining Chair - Marcel Breuer Digital Archive
patent specification
spring seat
https://breuer.syr.edu/Documents/Detail/copy-of-specification-of-british-provisional-patent-application-no.-1980037/194695
Copy of Specification of British Provisional Patent Application No. 1980037 - Marcel Breuer Digital...
copy of
provisional patent