made of concrete or stone-like material

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Patents Grantslast 30 patents

Information Patent Grant
Cryogenic trench/trough apparatus and method
- Patent number 11,866,942
- Issue date Jan 9, 2024
- Waskey Bridges, Inc.
- Stephen G. Benton
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Cryogenic trench/trough apparatus and method
- Patent number 11,473,308
- Issue date Oct 18, 2022
- Waskey Bridges, Inc.
- Stephen G. Benton
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Cryogenic trench/trough apparatus and method
- Patent number 11,041,299
- Issue date Jun 22, 2021
- Waskey Bridges, Inc.
- Stephen G. Benton
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Cryogenic trench/trough apparatus and method
- Patent number 10,487,510
- Issue date Nov 26, 2019
- Waskey Bridges, Inc.
- Stephen G. Benton
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
2975561
- Patent number 2,975,561
- Issue date Mar 21, 1961
- E04 - BUILDING
Information Patent Grant
2419996
- Patent number 2,419,996
- Issue date May 6, 1947
- E04 - BUILDING