| Patents for Howard Iron Works |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 33,550 | Oct. 22, 1861 | B.F. Taber | Improvement in rotary pumps | pumps |
| 37,530 | Jan. 27, 1863 | B.F. Taber | Improvement in machines for rossing bark | debarking machines |
| 48,594 | Jul. 04, 1865 | E. Schlenker | Bolt Cutter | |
| 91,199 | Jun. 15, 1869 | N. Baldwin | Improvement in Vise | bench vises |
| 156,066 | Oct. 20, 1874 | E. Schlenker | Improvement in vises | bench vises |
| 162,194 | Apr. 20, 1875 | E. Schlenker | Improvement in bolt-threading machines | metal threading machines |
| 166,730 | Aug. 17, 1875 | E. Schlenker | Improvement in hoisting-machines or elevators | elevators and lifts |
| 698,465 | Apr. 29, 1902 | W.m. Dollar, D.H. Darrin | Hoisting Apparatus | hoists, winches, come-alongs |
| 1,381,509 | Jun. 14, 1921 | F.J. Schwimmer | Bolt-Heading Machine | bolt heading machines |
| 1,613,369 | Jan. 04, 1927 | E.L. Worbois | Nut-Tapping Machine | nut or bolt making machines |
| 2,496,301 | Feb. 07, 1950 | C. Meixl | Tube Bundle Assembly for Heat Exchangers and the Like | heating apparatus |
