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bkuhn

Preservation of implied patent license is unique.

This footnote, co-drafted by me and Richard Fontana, explains the
apparent uniqueness GPLv3's preservation clause for GPLv2's original
implied patent license.

Fontana pointed out this distinction with commercial patent licensing.
I noticed as a further point that even some copyleft licenses, let alone
non-copyleft Free Software licenses, fail to include any clauses
preserving implicit patent license grants. Such is certainly of concern
for those licenses that contain explicit patent licensing provisions.

Fontana notes that during GPLv3 process, he was concerned that an
explicit patent license in GPLv3 might provide a basis for some to later
argue an implied patent license was no longer present. GPLv3§11's final
paragraph assures its safety.

denver@cherry:~$ ssh root@192.168.10.1
root@192.168.10.1's password: 


BusyBox v1.19.4 (2014-10-17 10:20:00 EDT) built-in shell (ash)
Enter 'help' for a list of built-in commands.

                    ____  _____	 ____  
  _ _ _            |  __||     ||  __| 
 | (_) |__ _ _ ___ | |   | | | || |    
 | | | '_ \ '_/ -_)| |__ | | | || |__  
 |_|_|_.__/_| \___||____||_|_|_||____| 
 -----------------------------------------
 Delusional Dan Version 1.2
root@libreCMC:~# busybox
BusyBox v1.19.4 (2014-10-17 10:20:00 EDT) multi-call binary.
Copyright (C) 1998-2011 Erik Andersen, Rob Landley, Denys Vlasenko
and others. Licensed under GPLv2.
See source distribution for full notice.

Usage: busybox [function] [arguments]...
   or: busybox --list[-full]
   or: function [arguments]...

	BusyBox is a multi-call binary that combines many common Unix
	utilities into a single executable.  Most people will create a
	link to busybox for each function they wish to use and BusyBox
	will act like whatever it was invoked as.

Currently defined functions:
	[, [[, arping, ash, awk, basename, brctl, bunzip2, bzcat, cat, chgrp,
	chmod, chown, chroot, clear, cmp, cp, crond, crontab, cut, date, dd,
	devmem, df, dirname, dmesg, du, echo, egrep, env, expr, false, fgrep,
	find, free, fsync, grep, gunzip, gzip, halt, head, hexdump, hostid,
	hwclock, id, ifconfig, kill, killall, less, ln, lock, logger, ls,
	md5sum, mkdir, mkfifo, mknod, mkswap, mktemp, mount, mv, nc, netmsg,
	netstat, nice, nslookup, ntpd, passwd, pgrep, pidof, ping, ping6,
	pivot_root, poweroff, printf, ps, pwd, readlink, reboot, reset, rm,
	rmdir, route, sed, seq, sh, sleep, sort, start-stop-daemon, strings,
	switch_root, sync, sysctl, tail, tar, tee, telnet, telnetd, test, time,
	top, touch, tr, traceroute, true, udhcpc, umount, uname, uniq, uptime,
	vconfig, vi, wc, wget, which, xargs, yes, zcat

root@libreCMC:~# exit
Connection to 192.168.10.1 closed.
denver@cherry:~$