His gas system: (US2951424, NL 97989C):
Nederlands:
http://v3.espacenet.com/origdoc?DB=EPODOC&IDX=NL97989C&F=0&QPN=NL97989C
English:
http://v3.espacenet.com/origdoc?DB=EPODOC&IDX=NL97989C&F=0&RPN=US2951424&DOC=dcb65d04ab6424e098530cc78f47eebe65
the embodiment of figures 7 and 8 is a system which was used in the AR 10/15/M16, with a small modification. If you watch the original armalite promotion video, the bolt is essentially identical to that in the figures.
Stoner 63 systeem (I think) (US3198076, NL129581C):
Nederlands:
http://v3.espacenet.com/origdoc?DB=EPODOC&IDX=US3198076&F=0&RPN=NL129581C&DOC=d5a84ff69d44fcb57531f0a87219c09037
English:
http://v3.espacenet.com/origdoc?DB=EPODOC&IDX=US3198076&F=0&QPN=US3198076
Also, US3035495 is interesting.