IP Library Granted Patent US 6,595,716
Granted Patent Utility
US 6,595,716 · App. 09/662,948

Cam lever assembly for manhole center

Inventors: Bryan E. VanDeVyvere, Henry Knaack, Jr.
Patented Case View Patent ↗
Granted: Jul 22, 2003 Filed: Sep 15, 2000
Inventors
Bryan E. VanDeVyvere
Henry Knaack, Jr.
Assignee (at issue)
Delaware Capital Formation, Inc.

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 6,595,716
App. No.
09/662,948
Filed
2000-09-15
Granted
2003-07-22
Kind
B1