Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6685753 | Method of installing an edge piece on a battery plate and apparatus for performing same | David A. Johnson | 2004-02-03 |
| 6062807 | Battery plate feeder having oscillating pick-up head | David A. Johnson | 2000-05-16 |
| 6030171 | Battery plate feeder having oscillating pick-up head | David A. Johnson | 2000-02-29 |
| 5655247 | Window cleaning apparatus | Charles Lee Allen, Richard Pawson, Mohammed Farsi | 1997-08-12 |
| 5454687 | High speed sorter/stacker | David Johnson | 1995-10-03 |
| 5129643 | Apparatus for stacking pasted battery plates | David A. Johnson | 1992-07-14 |
| 4824307 | Apparatus for vertically stacking battery plates | David A. Johnson | 1989-04-25 |
| 4822234 | Plate feed apparatus | David A. Johnson, George W. Kahl | 1989-04-18 |
| 4813440 | Apparatus for degreasing a continuous sheet of thin material | James Young | 1989-03-21 |
| 4804420 | Method for degreasing a continuous sheet of thin material | James Young | 1989-02-14 |
| 4758126 | Plate feed apparatus | David A. Johnson | 1988-07-19 |
| 4734229 | Method for calendering temperature-critical thermoplastic material using a two-phase heat transfer medium | James Young | 1988-03-29 |
| 4648417 | Apparatus for degreasing a continuous sheet of thin material | James Young | 1987-03-10 |
| 4577490 | Detecting leaks | David J. Bray, Peter E. G. Marshall, Francis R. Piper, Iain H. Murdoch | 1986-03-25 |
| 4462745 | Plate feed apparatus | James Young | 1984-07-31 |
| 4407063 | Method and apparatus for fabricating battery plate envelopes | — | 1983-10-04 |