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H & M - AMH, Inc. Patents |
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Assignee: H & M - AMH, Inc.
Address: Wilmington, DE
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 7201534 |
Apparatus and method to secure manhole accessways |
April 10, 2007 |
| A manhole access way security apparatus and method for using the security apparatus are disclosed. The security apparatus includes an insert, at least one locking pin and a locking mechanism each interconnected to allow users to easily and quickly install a security barrier under a m |
| 6881007 |
Apparatus and method to secure manhole accessways |
April 19, 2005 |
| A manhole access way security apparatus and method for using the security apparatus are disclosed. The inventive security apparatus includes an insert, at least one locking pin and a locking mechanism each interconnected to allow users to easily and quickly install a security barrier |
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