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.)
GRADE CROSSING GUARD CORP
Original Assignee
GRADE CROSSING GUARD CORP
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 GRADE CROSSING GUARD CORPfiledCriticalGRADE CROSSING GUARD CORP
Priority to ES127924ApriorityCriticalpatent/ES127924A1/es
Publication of ES127924A1publicationCriticalpatent/ES127924A1/es