Granted Patent
Utility
US 5,781,874 · App. 08/563,693
Control system for a compaction roller vibratory mechanism
Inventors:
G. Louis Troppman, III, Kenneth E. Gasper
Patented Case
View Patent ↗
Granted: Jul 14, 1998
Filed: Nov 28, 1995
Inventors
G. Louis Troppman, III
Kenneth E. Gasper
Assignee (at issue)
Ingersoll-Rand Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.