UNT Libraries Government Documents Department - 2 Matching Results
Search Results
- Improvement in Permutation-Locks
- Patent for an improvement in permutation locks.
- Improvement in Plows.
- Patent for "means whereby the beam of a plow may be elevated or depressed at the front end according to the depth to which it is intended that the plow shall run, and held securely at several points of adjustment." (Lines 11-16) Includes instructions and illustrations.