Did You Know...
...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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| Number | Title | Issue Date |
| 6391171 | Flangeless feed through A flangeless feed through supplies power to a device through a passage in a wall of a vacuum chamber. The feed through includes an insulator ring securely positioned in the passage, a first threaded insert, and a second threaded insert which engages the f... | 05/21/2002 |
| 5957717 | Range pole with integrated power system A range pole and in-line detachable battery module assembly including a range pole (10) with an elongated tubular graphite-epoxy range pole shell (102) which has a female cap assembly (108) and a male cap assembly (26) at opposite ends. The male cap assem... | 09/28/1999 |
| 5356306 | Metal conductor element This invention relates to a metal conductor element for improving electrical conductivity between spaced metal faces.... | 10/18/1994 |
| 4864260 | Waveguide connecting device The present invention relates to a clamping device for joining two waveguides used for propagating microwaves. The waveguides are of the type comprising hollow microwave propagation channels having at their meeting ends connection flanges in abutting rela... | 09/05/1989 |
| 4795361 | Clamping apparatus for coupling waveguides to one another There is disclosed a clamping device which comprises a U-shaped spring secured to a spring retainer in a pivotable manner. The spring retainer is a sub-assembly which consists of two plates forming a slot when sandwiched together to accommodate the spring... | 01/03/1989 |
| 3955871 | Connecting means for radio frequency transmission line Means for connecting together sections of a radio frequency transmission line. The connection is electrically correct, waterproof and substantially self-aligning so that even under adverse assembly conditions proper connection of the ends of the sections ... | 05/11/1976 |
