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Griffin Wellpoint Corporation Patents |
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Assignee: Griffin Wellpoint Corporation
Address: New York, NY
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 3968847 |
Wellpoint jetting head |
July 13, 1976 |
| A wellpoint jetting head having a plurality of spade-like teeth annularly positioned around the forward end of the head and projecting longitudinally therefrom for dislodging and chopping of the soil during hydrostatic jetting in combination with a tilting, side-to-side, rotational a |
| 3930538 |
Wellpoint with adjustable valve |
January 6, 1976 |
| A wellpoint having an outer screen pipe, and an inner intake pipe connected to a vacuum source. A positionable valve is mounted between the screen pipe and the intake pipe to regulate the amount of screen pipe surface subject to vacuum by the intake pipe. |
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