... He was already beginning to feela proprietary interest in the lady whose token he wore, and did notcare to discuss her with a casual acquaintance... 
Charles W. Chesnutt 「The House Behind the Cedars」
...Sad condition of the proprietary regime...
P. J. Proudhon 「What is Property?」
...Therefore always pour the arsenic stock or a proprietary dip in a thinstream evenly along the vat except at the shallow exit end...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
... You may convert to and distribute this work in any binary,compressed, marked up, nonproprietary or proprietary form, including anyword processing or hypertext form...
David Collins 「An Account of the English Colony in New South Wales, Vol. 1」
便利！手書き漢字入力検索