IP Library › Granted Patent US 5,109,806
Granted Patent Utility
US 5,109,806 · App. 07/597,065

Premix boiler construction

Inventors: Robert B. Duggan, James V. Goins, Donald E. Holloway, Ronald Moulder
Patented Case View Patent ↗
Granted: May 5, 1992 Filed: Oct 15, 1990
Inventors
Robert B. Duggan
James V. Goins
Donald E. Holloway
Ronald Moulder
Assignee (at issue)
The Marley Company LLC

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 5,109,806
App. No.
07/597,065
Filed
1990-10-15
Granted
1992-05-05
Kind
A