Famous Patents
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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| Number | Title | Issue Date |
| 6994498 | Lockset drilling guide A lockset drilling guide and a method of forming holes in a door are provided. The drilling guide includes a frame and at least a first opening and a second opening defined in the frame. The first opening is positioned at approximately 90 degrees to the second openi... | 02/07/2006 |
| 6978813 | Semi-automatic mortising machine A semi-automatic mortising machine includes a support base, a support bar, a guide device, a working device, a distance adjusting device, and a dust collection box. Thus, the displacement direction can be controlled in a manual manner during the working process, and... | 12/27/2005 |
| 6929042 | Semi-automatic mortising machine A semi-automatic mortising machine includes a support base, a support bar, a guide device, a working device, a distance adjusting device, and a dust collection box. Thus, the displacement direction can be controlled in a manual manner during the working process, and... | 08/16/2005 |
| 4947908 | Method and tool for forming biscuit joints A simple, low cost, light weight biscuit jointer (21) comprises an elongated motor housing (23), a motor end cap assembly (25) fixed to one end of housing (23) and a base assembly (27) for engagement with a workpiece. To form a biscuit receiving slot in a... | 08/14/1990 |
| 4412571 | Power chisel A laterally movable hand held motor driven cutting tool adapted to cut grooves of predetermined depth in wood, has a cutting bit with a hollow tubular cutting end. A plurality of peripheral chisel shaped cutting edges are formed in the tubular end. The cu... | 11/01/1983 |
| 4031931 | Mortising machine A mortising machine comprising a clamping means whereby the machine may be mounted upon a workpiece; a drive motor mounted such that its drive shaft is substantially perpendicular to the working face of the workpiece; a cutting head mounted to the end of ... | 06/28/1977 |
