Puppet-valve.

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US1283287A Puppet-valve. 失效

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Patent Title: Puppet-valve.
Application No.: US15297317

Application Date: 1917-03-07
Publication No.: US1283287A

Publication Date: 1918-10-29
Inventor: PFANSTIEHL CARL A
Applicant: PFANSTIEHL COMPANY INC
Assignee: Pfanstiehl Company Inc
Current Assignee: Pfanstiehl Company Inc
Priority: US15297317 1917-03-07

Puppet-valve.

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US09658462B1 Methods and systems for manufacturing a rear projection screen and a setup for displaying a simulated 3D hologram Public/Granted day:2017-05-23

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