Rain gauge

Details Rain gauge Rain gauge

1988-10-24

1991-05-21

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Volume, flow or rate

Patent

active

D03169812

REFERENCES:
patent: D157804 (1950-03-01), Vernon
patent: D215962 (1969-11-01), Woofter
patent: D218986 (1970-10-01), Hahn
patent: D260974 (1981-09-01), Lesser
patent: D293087 (1987-12-01), Grinde
patent: 955175 (1910-04-01), Lomax
patent: 2509522 (1950-05-01), Phillips
patent: 2513605 (1950-07-01), Vernon
patent: 2601783 (1952-07-01), Rouse et al.
patent: 2821852 (1958-02-01), Hastings

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