Granted Patent
Utility
US 4,729,724 · App. 06/913,500
Blower for propelling a continuous gas stream with inflatable gas seals
Inventors:
Hans-Heinrich Henning, Hartmut Lelickens, Herbert Schramm
Patented Case
View Patent ↗
Granted: Mar 8, 1988
Filed: Sep 29, 1986
Inventors
Hans-Heinrich Henning
Hartmut Lelickens
Herbert Schramm
Assignee (at issue)
Kraftwerk Union Aktiengesellschaft
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.