, a safety pin, tooth brush, ete. rack in the sash, as shown in Fig. 2. This is applied their cutting edges will partiy overlie the cutting Composition of matter is any mixture or combina- to both sash, and when a sash is moved to a closed edges of the plows EH. The heads D also carry the tion of… … prevent the earlier patentee or anyone else from using AN IMPROVED WINDOW RAISING AND LOCKING the later invention during the life of the later DEVICE. patent.” Regarding the claims of a patent, Mr. Prindle says position, it winds up the spring and is held in posi- that there is no piece of English…
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