Howard F. Hall

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Longmont, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus enabling archery practice
- Patent number 5,566,951
- Issue date Oct 22, 1996
- Dart International, Inc.
- Peter J. Dart
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Method and apparatus enabling archery practice
- Patent number 5,328,190
- Issue date Jul 12, 1994
- Dart International, Inc.
- Peter J. Dart
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
System for training and evaluation of security personnel in use of...
- Patent number 4,948,371
- Issue date Aug 14, 1990
- The United States of America as represented by the United States Department o...
- Howard F. Hall
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS