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.)
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.)
GERMAN-AMERICAN PORTLAND CEMENT WORKS
Original Assignee
GERMAN-AMERICAN PORTLAND CEMENT WORKS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GERMAN-AMERICAN PORTLAND CEMENT WORKSfiledCriticalGERMAN-AMERICAN PORTLAND CEMENT WORKS
Application grantedgrantedCritical
Publication of CA156521ApublicationCriticalpatent/CA156521A/fr