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 |
| 4939913 | Ornamental watch accessory A readily attachable and detachable ornament for watches and the like comprising an ornamental member adapted to be positioned on top of the watch housing and having an opening therein through which the watch face is visible, said ornamental member having... | 07/10/1990 |
| 4879701 | Memorialized case clocks Case clocks, especially of the so-called tall-case or grandfather type, equipped with at least one suspended elongated weight, preferably contained within a weight shell or casing, are provided with at least one narrow annular memorializing band surroundi... | 11/07/1989 |
| 4817064 | Structure for fabricating jewelry parts or wrist watches An article of jewelry or wrist watches with at least one gem stone or a watch, the gem stone (3) or parts of the watch are associated with a holding element (2) and are interchangeably joined thereto together with a support (1). Thus, as a function of the... | 03/28/1989 |
| 4253178 | Decorative or ornamental appliance for use with articles such as wrist watches An ornamental appliance or device which is removably attachable to another item, such as, more especially, a wrist watch to enhance its appearance. In the preferred form of the invention, it is a member in the form of a bezel which may have jewels or gem ... | 02/24/1981 |
| 4208870 | Clock-oriented visual reminder and method For reminding a viewer that a predetermined action should be effected at a particular time, means such as a pill bucket, medication spoon, or the like, is adapted to be removeably supported at a fixed time indicator with respect to which time indexing mea... | 06/24/1980 |
| 3996736 | Clock or calendar with removable casing Apparatus for indicating the passage of time, which may be a clock or a calendar, comprising a base that is mounted on a wall and operating mechanism that is mounted on the forward side of the base. A removable cover comprises a transparent front plate su... | 12/14/1976 |