U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Quotables

"I think there is a world market for maybe five computers."

Thomas Watson, chairman of IBM ; 1943

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 84/64 - Screening and cleaning


Subclass of Class 84 - Music
Definition: Means to prevent dust from entering the action or for removing
No. of patents: 1
Last issue date: 11/09/1976


NumberTitleIssue Date
3990340Valve device especially for pneumatically operated player pianos and organs
A valve device, especially for pneumatically operated pianos and organs, in which the valve device is interposed between a source of suction and pneumatic actuators for the keys of the instrument and under the control of a perforated paper strip. The valv...
11/09/1976
 
Sign InRegister
Username  
Password   
forgot password?