| Hindman, Boyden | | Boyden E. Hindman | Westclox |
| Holtz, Frederick | | Frederick C. Holtz | Westclox |
| Hopson, William | | William T. Hopson | Westclox |
| Horner, William | | William Chapman Horner | Westclox |
| Imirie, John | Witness on a Stahlberg patent. | John Imirie | |
| Ireland, Francis | Witness on Ernst Roth design patent. | Francis M Ireland | |
| Johnson, Abbie | | Abbie E. Johnson | Westclox |
| Johnson, Andrew | | Andrew J. Johnson | Westclox |
| Johnson, T. C. | Witness to a Stahlberg patent. | T. C. Johnson | |
| Johnston, M. A. | Witness on patent for 20th Century Alarm, Otto Bartel, no. 668968. | M. A. Johnston | |
| Kaefer, Martin | | Martin Hermann Kaefer | Westclox |
| Kaminky, Oscar | | Oscar H. Kaminky | Westclox |
| Keller, Frederick | | Frederick Keller | Westclox |
| Kelly, Roger | | Roger L. Kelly | Westclox |
| Keppler, George | | George Keppler | Westclox |
| Kern, George | Designed the Big Ben alarm clock. In his patents he states "Be it known that I, George Kern, a subject of the Emperor of Germany, residing at Peru, in the county of Lasalle, State of Illinois, in the United States, . . ." | Mr. George Kern | Westclox |
| Klein, C. J. | I'm not sure if this is a different person than Joseph Klein | J. C. Klein | Westclox |
| Klein, Joseph | Early employee of the company. | Joseph Klein | Westclox |
| Klinger, C. | | C. Klinger | Westclox |
| Knight, George | Witness on a Stahlberg patent. | Geo. H. Knight | |
| Knight, J. E. | Witness on a Stahlberg patent | J. E. Knight | |
| Kollstede, Alfred | | Alfred G. Kollstede | Westclox |
| Kraft, Howard | | Howard L. Kraft | Westclox |
| Kramer, Richard | I'm not sure if his patent applies to Westclox or Seth Thomas. | Richard Kramer | |
| Kurz, Fred | | Fred Kurz | Westclox |
| Lagear, Weston | | Weston B. Lagear | Westclox |
| Lawson, Stanley | Cincinnati, Ohio. | Stanley M. Lawson | Westclox |
| Le Beau, T. | | T. Le Beau | Westclox |
| LeRoy, Gaston | | Gaston A. LeRoy | Westclox |
| Levin, Monte | | Monte L. Levin | Westclox |
