Granted Patent
Utility
US 4,841,193 · App. 07/153,363
Fluorescent lamp device with incandescent bulb type base cap
Inventors:
Naoyuki Nakamura, Masashi Sangen
Patented Case
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Granted: Jun 20, 1989
Filed: Feb 8, 1988
Inventors
Naoyuki Nakamura
Masashi Sangen
Assignee (at issue)
Matsushita Electronics Corporation
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.