Hazel Harper — 2 Patents at Unknown

Hazel Harper — 2 Patents

UNUnknown: 2 patents #12,644 of 83,584Top 20%

Washington, DC: #1,102 of 3,063 inventorsTop 40%

District of Columbia: #1,102 of 3,063 inventorsTop 40%

Overall (All Time): #1,709,992 of 4,157,543Top 45%

Hazel Harper has been granted 2 US patents while listed as an inventor at Unknown. All of these patents were granted in 1981. Hazel Harper ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Hazel Harper in Washington, DC, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4306863	Amalgam dispenser with lockable plugger	Franklin E. Law	1981-12-22
4306864	Combination amalgam dispenser and plugger	Franklin E. Law	1981-12-22

Hazel Harper — 2 Patents

Issued Patents All Time

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