Darla K. Patterson

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Glendale, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Flexible, constant-downward-pressure obstructed piping clearing system
- Patent number 12,071,756
- Issue date Aug 27, 2024
- Roy C. Patterson
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Flexible, constant-downward-pressure obstructed piping clearing system
- Patent number 10,808,388
- Issue date Oct 20, 2020
- Roy C Patterson
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Flexible, constant-downward-pressure obstructed piping clearing system
- Patent number 10,202,744
- Issue date Feb 12, 2019
- Roy C. Patterson
- B08 - CLEANING

Patents Applicationslast 30 patents

Information Patent Application
FLEXIBLE, CONSTANT-DOWNWARD-PRESSURE OBSTRUCTED PIPING CLEARING SYSTEM
- Publication number 20200318331
- Publication date Oct 8, 2020
- Roy C. Patterson
- E03 - WATER SUPPLY SEWERAGE
Information Patent Application
FLEXIBLE, CONSTANT-DOWNWARD-PRESSURE OBSTRUCTED PIPING CLEARING SYSTEM
- Publication number 20190119892
- Publication date Apr 25, 2019
- Roy C. Patterson
- E03 - WATER SUPPLY SEWERAGE
Information Patent Application
FLEXIBLE, CONSTANT-DOWNWARD-PRESSURE OBSTRUCTED PIPING CLEARING SYSTEM
- Publication number 20180127962
- Publication date May 10, 2018
- Roy C. Patterson
- B08 - CLEANING