Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA595936A
Inventor
R. Berwick William
G. Berwick Albert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NON-DRIP MEASURE Co
Gaskell and Chambers Ltd
Original Assignee
NON-DRIP MEASURE Co
Gaskell and Chambers Ltd
Publication date
Application grantedgrantedCritical
Publication of CA595936ApublicationCriticalpatent/CA595936A/en