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...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.

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Class 379/226 - Having a manual exchange


Subclass of Class 379 - Telephonic communications
Definition: Subject matter wherein at least one of the plural exchanges
No. of patents: 2
Last issue date: 12/17/2002


NumberTitleIssue Date
6496836Symbol-based memory language system and method
A method using symbols to gather, store, retrieve, manipulate and report information, with attendant improvements in communication, efficiency and efficacy. A customer communication received by an organization is assigned a symbol on the basis of key word...
12/17/2002
6067305Computer telephone integration exchange system
A computer telephony integration exchange system in which the user can easily use the functions of function codes even though he/she does not know the relevant function codes of the simple digital exchange system. The digital exchange system, including: a...
05/23/2000
 
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