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US Patent: 1,641,838
Pressure gauge
Patentee:
Henry J. Burkhardt (exact or similar names) - Mount Ephraim, NJ

USPTO Classifications:
73/709, 73/732

Tool Categories:
gauges : vacuum and pressure gauges
propulsion and energy : steam apparatus : stationary boilers : steam pressure gauges

Assignees:
J. E. Lonergan Co. - Philadelphia, PA

Manufacturer:
J. E. Lonergan Co. - Philadelphia, PA

Witnesses:
Unknown

Patent Dates:
Applied: Nov. 21, 1921
Granted: Sep. 06, 1927

Patent Pictures:
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for J. E. Lonergan Co.

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