Patent for an invention of a valve locking device by which the fuel supply pipe can be cut off and a valve which is inserted in the said pipe locked in the cut off position.
Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.
Descriptive information to help identify this patent.
Follow the links below to find similar items on the Portal.
Titles
Main Title:
Auto-Lock
Added Title:
Auto Lock
Description
Patent for an invention of a valve locking device by which the fuel supply pipe can be cut off and a valve which is inserted in the said pipe locked in the cut off position.