Granted Patent
Utility
US 4,754,815 · App. 06/776,242
Sod laying machine
Inventors:
Gerardus J. Brouwer, Henry Zwambag
Patented Case
View Patent ↗
Granted: Jul 5, 1988
Filed: Sep 16, 1985
Inventors
Gerardus J. Brouwer
Henry Zwambag
Assignee (at issue)
Brouwer Turf Equipment Limited
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.