Stein; Harvey Lewis
Patent Applications and Registrations
Patent applications and USPTO patent grants for Stein; Harvey Lewis.The latest application filed is for "air blasting devices for plumbing purposes to clean, clear, unclog, or unstop drains or pipes".
- Stein; Harvey Lewis - Annapolis MD US
| Patent | Date |
|---|---|
| Air blasting devices for plumbing purposes to clean, clear, unclog, or unstop drains or pipes Grant 8,650,670 - Stein February 18, 2 | 2014-02-18 |
| Air Blasting Devices for Plumbing Purposes to Clean, Clear, Unclog, or Unstop Drains or Pipes App 20130067650 - Stein; Harvey Lewis | 2013-03-21 |
| Air blasting devices for plumbing purposes to clean, clear, unclog, or unstop drains or pipes Grant 8,307,468 - Stein November 13, 2 | 2012-11-13 |
| Air blasting devices for plumbing purposes to clean, clear, unclog, or unstop drains or pipes Grant 8,245,329 - Stein August 21, 2 | 2012-08-21 |
| Plunger Grant D647,671 - Stein October 25, 2 | 2011-10-25 |
| Air blasting devices for plumbing purposes to clean, clear, unclog, or unstop drains or pipes App 20100313345 - Stein; Harvey Lewis | 2010-12-16 |
| Air blasting devices for plumbing purposes to clean, clear, unclog, or unstop drains or pipes App 20100077541 - Stein; Harvey Lewis | 2010-04-01 |
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