Transport Research International Documentation (TRID) https://trid.trb.org/ en-us Copyright © 2026. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Transport Research International Documentation (TRID) https://trid.trb.org/Images/PageHeader-wTitle.jpg https://trid.trb.org/ PROPELLER DEVICE https://trid.trb.org/View/55663 Wed, 23 Nov 1977 00:00:00 GMT https://trid.trb.org/View/55663 PILGRIM'S PROGRESS WITH THEIR KEYLESS PROPELLER FITTING SYSTEM https://trid.trb.org/View/25086 Thu, 16 Jan 1975 00:00:00 GMT https://trid.trb.org/View/25086 SHIP'S PROPELLERS MOUNTED WITHOUT KEYS https://trid.trb.org/View/11716 Mon, 22 Jan 1973 00:00:00 GMT https://trid.trb.org/View/11716 NEW SYSTEM SPEEDS REMOVAL OF TAILSHAFTS https://trid.trb.org/View/2605 Fri, 29 Oct 1971 00:00:00 GMT https://trid.trb.org/View/2605