Legal Opinion
Weld Mfg. Co. v. Johnson Service Co.
Court of Appeals for the First Circuit
Decided August 15, 1906No. 643Published
Appeal from the Circuit Court of the United States for the District of Massachusetts.
1Opinion of the Court
BROWN, District Judge.
This suit is for infringement of claims 1 and 3 of letters patent No. 542,733, granted to Warren S. Johnson July 16, 1895, for an improvement in heat regulating apparatus:
“Claim 1. In a valve or damper-controlling apparatus, the combination of a primary, a secondary, and a tertiary valve; fluid-pressure motors for actuating the primary and secondary valves; and a thermostatic motor for actuating the tertiary valve; the primary valve serving to regulate the heat supply, the secondary valve serving to control the delivery and release of fluid pressure to and from the…
2Cases cited8 opinions
- Potts v. CreagerSupreme Court of the United States · 1895
- Hobbs v. BeachSupreme Court of the United States · 1901
- Western Electric Co. v. LaRueSupreme Court of the United States · 1891
- Lawther v. HamiltonSupreme Court of the United States · 1888
- National Cash Register Co. v. Boston Cash Indicator & Recorder Co.Supreme Court of the United States · 1895
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