Patented under the following numbers: 5,676,243
4,976,124- 4,658,479- 4,612,685- D302,280.
with others pending
©1985-2020 C.E. Sanders
Calslock™ mfg.
Thumbsquare™
Pierson, FL - Keaau, Hawaii - Corcoran, CA
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Calslock Portable Door Lock since 1985
Redesigned 2011 -2014 -2020 Optional with slide on Keyed Lock |