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US Patent: 633,339
Combination Steam and Gas Engine
Patentees:
Gustav Dahlberg (exact or similar names) - McDonald, Washington County, PA
Jacob Clicquennoi (exact or similar names) - McDonald, Washington County, PA
Ernest Uhlin (exact or similar names) - McDonald, Washington County, PA

USPTO Classifications:
123/189, 123/74AA, 60/630

Tool Categories:
propulsion and energy : steam engines
propulsion and energy : internal combustion engines : gas and gasoline engines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Apr. 05, 1899
Granted: Sep. 19, 1899

Reissue Information:
Reissued as RE12,024 (Aug. 26, 1902)

Patent Pictures:
USPTO (New site tip)
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