@misc{indiciae631863817001,
  title = {Electrolytically regenerative hydrogen-oxygen fuel cell Patent},
  author = {Findl, E. and Frank, H. A. and Klein, M. G. and Wilner, B. M.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19710001577},
  note = {Source identifier: 19710001577}
}