| All Patents in class 33/414 |
Patents 1 -
10
of 10
      |
| Number | Date | Patentee | Title | Type |
| 12,599 | Mar. 27, 1855 | S.B. Knight | Method of Chalking Lines | layout tools |
| 65,057 | May 28, 1867 | J.W. Carter | Improvement in chalk-line marker | layout tools |
| 316,530 | Apr. 28, 1885 | E. Hardin, J.L. Downie | Line Chalker and Plumb Bob | plumb bobs |
| 461,757 | Oct. 20, 1891 | R.C. Huxtable | Chalk Line Holder and Plummet | |
| 873,686 | Dec. 10, 1907 | A.B. Sharp | Chalk Line Holder | |
| 909,846 | Jan. 12, 1909 | W.N. Cavileer | Plumb Bob and Chalk Line Holder | plumbs |
| 947,892 | Feb. 01, 1910 | J.D. Eastman | Chalk-Line Holder | rules |
| 1,251,712 | Jan. 01, 1918 | J.S. Wakimoto | Chalk Line Holder & Reel | |
| 1,876,473 | Sep. 06, 1932 | M.A. Gibson, F.C. Spaeth | Plumb Bob and Chalk Line | plumb bobs |
| 2,589,500 | Mar. 18, 1952 | J.R. Thomson, R.K. Landon | Strait-Line | plumb bobs |
