Inventor · disambiguated record
Eric F. Burtis
Also filed as: BURTIS ERIC F · LIEN MING T
4 granted patents·112 citations·filing 1976–1979
80Inventor score
Technology areasG09B
Files withBURTIS ERIC F4
Top patents by PatentIndex Score
4 records- 0190US4151659AMachine for teaching readingBURTIS ERIC F·Filed 1978·Granted May 1, 1979·50 cites·22 claims
- 0285USD249091SConsole for apparatus for performing mathematical functionsBURTIS ERIC F·Filed 1976·Granted Aug 22, 1978·22 cites·1 claims
- 0375US4089124AArithmetic training apparatusBURTIS ERIC F·Filed 1976·Granted May 16, 1978·23 cites·9 claims
- 0467US4245405AMachine for teaching readingBURTIS ERIC F·Filed 1979·Granted Jan 20, 1981·17 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →