William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 6360166 | Apparatus and method for removing logs from a forestry site An apparatus and method for removing logs from a forestry site. The apparatus and method includes a primary mobile machine having means attached to a rearward portion thereof for holding a first end of a first log cluster. The apparatus and method also in... | 03/19/2002 |
| 4636130 | Railroad track trailer A railroad track trailer for carrying replacement rail sections along a railroad track, which reduces the problems of having a trailer which will tend to jump off the track, when going around curves, and which includes support systems that ease the abilit... | 01/13/1987 |
| 4437368 | Apparatus and method of reducing trees to firewood An apparatus and method for reducing trees to firewood. The apparatus has an angle iron frame supported by at least two wheels and a plurality of upright yoke supports spacedly positioned along the angle iron frame for holding tree logs to be cut between ... | 03/20/1984 |
| 3977695 | Log bunk with releasable stakes having a positive, remotely operated latching mechanism A log bunk having releasable stakes, secured in the upright position by a positive latching mechanism enclosed totally within the bunk. The invention provides a latch mechanism wherein the stakes can be released from either end of the bunk.... | 08/31/1976 |