@misc{indiciaeaafb5baa990b,
  title = {Bidirectional step torque filter with zero backlash characteristic Patent},
  author = {Baker, R. L. and Veillette, L. J. and Williams, S. R.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19710012269},
  note = {Source identifier: 19710012269}
}