Compactly stackable chairs and chair-rows

Claim 1

AN A STACKABLE LIGHTWEIGHT RELATIVELY RIGID ROW OF SIDE-BY-SIDE SEPARABLY CONNECTED, INDIVIDUALLY AND AS-AROW STACKABLE CHAIRS, EACH CHAIR OF SAID ROW OF CHAIRS HAVING FRAME MEANS PROVIDING SUBSTANTIALLY PARALLEL FRONT LEGS AND SUBSTANTIALLY PARALLEL SIDE RAILS CONNECTED THERETO, A PAIR OF SUBSTANTIALLY PARALLEL L-SHAPED PORTIONS EACH COMPRISING A BOTTOM RAIL AND A REAR LEG, FIRST INTERPOSED MEANS CONNECTING THE FRONT END OF EACH SAID BOTTOM RAIL TO AND SPACING IT FROM THE BOTTOM OF THE ADJACENT FRONT LEG, SECOND INTERPOSED MEANS CONNECTING THE REAR LEGS TO AND SPACING THEM FROM THE SIDE RAILS, AND SEAT AND BACK MEMBERS SECURED TO AND CARRIED BY THE FRAME MEANS OF EACH SAID CHAIR, THE COMBINATION THEREWITH OF: A THREEPOINT CONNECTION BETWEEN THE ADJACENT CHAIRS OF EACH SAID ROW, COMPRISING TWO CONNECTION MEMBERS ON EACH SAID REAR LEG IN VERTICAL SPACED RELATION RESPECTING THE SPACING CONNECTION OF SAID REAR LEG WITH SAID SIDE RAIL, A THIRD CONNECTION MEMBER SECURED TO A FORWARD PORTION OF EACH SAID BOTTOM RAIL, AND EACH OF SAID CONNECTION MEMBERS POSITIVELY INTERLOCKING WITH CORRESPONDING MEMBERS ON ANOTHER SAID CHAIR BY RELATIVE HORIZONTAL MOVEMENTS AND EACH ACTING WHEN SO INTERLOCKED TO PREVENT RELATIVE VERTICAL MOVEMENT THEREBETWEEN, WHEREBY SAID CHAIRS MAY BE LIFTED AND STACKED IN ROWS.