@misc{indiciae998bcc1e65e9,
  title = {Apparatus for igniting solid propellants Patent},
  author = {Allen, H., Jr. and Ciepluch, C. C. and Fletcher, E. A.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19700024064},
  note = {Source identifier: 19700024064}
}