| http://www.w3.org/ns/prov#value | - on attached to the other end of said arm plate, said table having an operating portion mainly constituted by a keyboard, a grip portion, and a mechanism horizontally pivoted about said arm plate and a mechanism for locking and unlocking said pivot mechanism; a lever placed on the undersurface of said table so as to be operated by an operator, for biasing said locking and unlocking mechanism of sai
|
