A. and B. Pullman
of USA, designers of Sleeping and Restaurant carriages for railways.
Also see Pullman's Palace Car Co
NB Also see below for A. B. Pullman Co
1868 "Messrs. A. AND B. PULLMAN, who have long taken the lead in the construction of drawing-room and sleeping carriages for American railroads, have recently advanced another step, and are now sending out hotel cars upon some of the long western and south-western lines...
"It is not Messrs. Pullman's intention to extend their locomotive restaurant system to provide for the requirements of all the passengers in the train to which the hotel car is attached, but only to cater for such as desire to be spared the annoyances of struggling for an ultimately problematical dinner....
"The Delmonico, the first of this class of car built, was made at the erecting-shops of the Chicago, Burlington and Quincy Railroad, at a cost of $20,000, and is now running between New York and Chicago. "[1].
1880 Albert Benton Pullman, a brother of George Mortimer Pullman, of Chicago filed a patent on a car door which he assigned to the A. B. Pullman Co. (Albert was initially a superintendent and a conductor on Pullman cars, afterwards becoming vice-president of the company, in charge of construction[2]).
1893 A. B. Pullman Co made a patent freight car door[3]