| Patents Granted on 1897-04-27 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 581,266 | Apr. 27, 1897 | F. Challoner | Shingle Sawing Machine | shingle machines |
| 581,267 | Apr. 27, 1897 | D.A. Cheney | Wrench | quick adjust wrenches |
| 581,385 | Apr. 27, 1897 | E.P. Woillard | Gas or Vapor Engine | cylinders |
| 581,396 | Apr. 27, 1897 | J.P. Hutchins | Tool | wedge adjust wrenches |
| 581,412 | Apr. 27, 1897 | E. Captaine | Vaporizer and Combustion Chamber for Petroleum Motors | internal combustion engines |
| 581,427 | Apr. 27, 1897 | S. Olson | Nut Wrench | ratchet wrenches |
| 581,507 | Apr. 27, 1897 | F.S. Bradley | Book-stapling machine | book binder |
| 581,534 | Apr. 27, 1897 | W.H. Boyle, T.S. Homans | Mortising machine | mortising machines |
| 581,571 | Apr. 27, 1897 | R.H. Benton | Valve Reseating Machine | valve reseating machines |
| 581,677 | Apr. 27, 1897 | A. Lee | Bit for Flared Holes | drill bits |
| 581,679 | Apr. 27, 1897 | W.F. Ott | Excelsior machine | excelsior machines |
| 581,682 | Apr. 27, 1897 | S. Van Slyke | Bicycle brake | bicycles and tricycles |
| 581,683 | Apr. 27, 1897 | W.O. Worth | Gas Engine | gas and gasoline engines |
