CA775043A - Sheet having an outer layer that becomes perforate upon heating, suitable as an intermediate in copying processes; and a method of using it
- Google Patents
Sheet having an outer layer that becomes perforate upon heating, suitable as an intermediate in copying processes; and a method of using it
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
CA775043A
Inventor
W. R. Puerckhauer Gerhard
G. Wartman Thomas
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
Publication date
Application grantedgrantedCritical
Publication of CA775043ApublicationCriticalpatent/CA775043A/en
CA775043ASheet having an outer layer that becomes perforate upon heating, suitable as an intermediate in copying processes; and a method of using it
ExpiredCA775043A
(en)