| Patents Granted on 1977-03-__ |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| D243,506 | Mar. 01, 1977 | A.J. Hess | Elephant Brand Skateboard Wrench | combination tools |
| 4,010,943 | Mar. 08, 1977 | S.E. Eft | Power drill support and guide apparatus | drill and tap guides |
| CA-1,007,257 | Mar. 22, 1977 | J.J. Fatula | Self-centering rolls | |
| 4,013,152 | Mar. 22, 1977 | C.O. Jones, Jr. | Mechanical clutch for cyclic machines | metalworking machine mechanisms |
| 4,013,176 | Mar. 22, 1977 | J.J. Schachte, E.R. Lohneis | Unitary Work Changer for Machining Center | workpiece changers and storage mechanisms |
| CA-1,007,619 | Mar. 29, 1977 | D.H. Goering | Rotary fluid engine | hot air engines |
