Spectrophotometer

Details Spectrophotometer Spectrophotometer

1987-03-09

1990-08-28

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Chemical

D10 46X, D24 17X

Patent

active

D03101789

REFERENCES:
patent: D258273 (1981-02-01), Collister
patent: D261623 (1981-11-01), Collister
patent: D269416 (1983-06-01), Retzer
patent: D276315 (1984-11-01), Collister
patent: D282724 (1986-02-01), Collister
patent: D283107 (1986-03-01), Collister
patent: D285114 (1986-08-01), Collister
patent: 3523748 (1970-08-01), Chisholm
patent: 3702736 (1972-11-01), Coggeshall
patent: 3877817 (1975-04-01), Ralston
patent: 4236075 (1980-11-01), Nexo
patent: 4274744 (1981-06-01), Chae

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