Method of producing matrices.

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US854456A Method of producing matrices. 失效

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Patent Title: Method of producing matrices.
Application No.: US1905261033

Application Date: 1905-05-18
Publication No.: US854456A

Publication Date: 1907-05-21
Inventor: BROWN FRANK H , HANRAHAN JOHN E , BOYDEN GEORGE A
Applicant: NAT COMPOSITYPE COMPANY
Assignee: Nat Compositype Company
Current Assignee: Nat Compositype Company
Priority: US1905261033 1905-05-18

Method of producing matrices.

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