Grandfather clock pendulum

Details Grandfather clock pendulum Grandfather clock pendulum

1981-04-22

1983-06-07

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Dial, indicator hand, or other element or attachment

Watch or clock element, or attachment

D1007

Patent

active

D02692570

REFERENCES:
patent: 444433 (1891-01-01), Hammer
Seth Thomas Clocks, Cat. #441-1886-1887-p. 119-Clock with Mercurial Pendulum.
Trend Clocks Cat.-1978/1979-Lyre Pendulumed Clocks on front cover.

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