Assignee
Inventors
- James Q. Steigelman (2 patents)
- Roger B. Bargainnier (1 patents)
- Glenn A. Shaffer, deceased (1 patents)
- by Irene S. Charland, administrator DBN CTA (1 patents)
- Geoffrey L. Harris (5 patents)
US Patent 4228214 · Granted Oct 14, 1980