logo

For the Inventor, By the Inventor

Calhoun, LA, United States of America

Sewer Sentry LLC


USPTO Granted Patents = 4

Forward Citations = 0

Loading Chart...
Loading Chart...

5 inventors (with patents filed for the assignee):

goldMedal David Putnam (4 out of 32 patents)

silverMedal Guido Quesada (1 out of 23 patents)

bronzeMedal William Eugene Putnam (1 out of 1 patent)

4.  Randall Avery Putnam (1 out of 1 patent)

5.  Mark Alfred Weih (1 out of 1 patent)


4 patents:

1. 12703954 - Extension pipe for manhole cover (2026-08-11),
2. 12345011 - Vented precipitation guarding manhole cover assembly (2025-07-01),
3. 12320089 - Reinforced manhole cover gasket (2025-06-03),
4. 12270175 - Vented precipitation guarding manhole cover assembly (2025-04-08),
logo

Company Badge

USPTO Data Jan 1 1976 - Sep 15 2026

4 Patents

#1 in Calhoun, LA

#246 in Louisiana

#60,511 in US

Calhoun, LA (US)
Calhoun, LA, United States of America

Sewer Sentry LLC

Forward Citations = 0

5 inventors:

goldMedal David Putnam (4 out of 32 patents)

silverMedal Guido Quesada (1 out of 23 patents)

bronzeMedal William Eugene Putnam (1 out of 1 patent)

4.  Randall Avery Putnam (1 out of 1 patent)

5.  Mark Alfred Weih (1 out of 1 patent)

Please report any incorrect information to [email protected]
Loading…