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.)
Geo W King Ltd
Original Assignee
Geo W King Ltd
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 Geo W King LtdfiledCriticalGeo W King Ltd
Priority to ES338737ApriorityCriticalpatent/ES338737A3/en
Publication of ES338737A3publicationCriticalpatent/ES338737A3/en
Improvements in a vertical lift door, in which the elevation and descent of the same are effected by means of two, at least, independently driven lifting units, coupled to the door at points spaced the entire length of the door; means adapted to automatically control the operating speeds of the lifting units, so that the door is maintained in a level or substantially level position during its vertical movement. (Machine-translation by Google Translate, not legally binding)
ES338737A1967-03-311967-03-31Improvements in a vertical lifting position. (Machine-translation by Google Translate, not legally binding)
ExpiredES338737A3
(en)