{HEAD ~ The present invention} includes an apparatus for an active/inactive door system wherein an inactive door lock prevents the locking of {TAIL ~ an active door lock} unless the inactive door lock is first engaged in a locking position 
{ HEAD ~ The present invention } includes an apparatus for an active / inactive door system wherein an inactive door lock prevents the locking of { TAIL ~ an active door lock } unless the inactive door lock is first engaged in a locking position
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH