Metallic frame for revolving doors.

Invention Grant

US813602A Metallic frame for revolving doors. 失效

Title translation: 用于翻转门的金属框架。

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Patent Title: Metallic frame for revolving doors.
Patent Title (中): 用于翻转门的金属框架。
Application No.: US1905270768

Application Date: 1905-07-22
Publication No.: US813602A

Publication Date: 1906-02-27
Inventor: KANNEL THEOPHILUS VAN
Applicant: KANNEL REVOLVING DOOR COMPANY VAN
Assignee: Kannel Revolving Door Company Van
Current Assignee: Kannel Revolving Door Company Van
Priority: US1905270768 1905-07-22

Metallic frame for revolving doors.

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