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3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.

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Class 411/944 - Flexible key


Subclass of Class 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
Definition: Art collection under art collection 924 in which the nut
No. of patents: 1
Last issue date: 01/23/1990


NumberTitleIssue Date
4895485Locking key for threaded insert
A key for locking a threaded insert in a carrier material is provided with an improved tang portion. The improved tang portion includes spring retention means for reducing the friction required to position and hold the key within an insert slot prior to f... 		01/23/1990
 
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