Patents
Patents filed since that cite Meyer's. Most are other people's work, and an examiner chose many of them during prosecution rather than the applicant volunteering them.
Citation index — what each of Meyer’s filings cites, and every later patent citing it.
2 patents from 1977 · every year
1977 · 2
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JPS5272406A
Rectangular wave generator
Japan · 16 Jun 1977 · indexed, no text held
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JPS5211252U
JPS5211252U
Japan · 26 Jan 1977 · indexed, no text held