| All Patents in class 33/393 |
Patents 1 -
15
of 16
      |
| Number | Title | Classification(s) |
| 138,790 | Improvement in Plumb Bobs | 33/393 |
| 151,521 | Improvement in Plumb Bobs | 33/393 |
| 266,671 | Plumb Bob | 33/350, 33/393 |
| 329,573 | Plumb Bob | 33/350, 33/393 |
| 433,842 | Builder's Plumb | 144/133.1, 33/393 |
| 461,757 | Chalk Line Holder and Plummet | 33/354, 33/393, 33/414 |
| 584,803 | Plumb Bob | 33/393 |
| 632,286 | Plumb Bob | 33/393 |
| 642,888 | Combination Tool | 33/353, 33/354, 33/381, 33/393, 33/420, 33/761 |
| 645,263 | Tape reel | 242/395.1, 242/405.3, 242/407, 33/393, 74/547 |
| 833,699 | Plumb Bob | 33/393 |
| 909,846 | Plumb Bob and Chalk Line Holder | 33/354, 33/370, 33/393, 33/414 |
| 932,218 | Reel | 33/393 |
| 1,876,473 | Plumb Bob and Chalk Line | 33/393, 33/414 |
| 2,589,500 | Strait-Line | 242/395.1, 242/396.1, 242/405, 33/393, 33/414 |
