| Serial Number | 99552377 |
| Word Mark | LET |
| Filing Date | Wednesday, December 17, 2025 |
| Status | 681 - PUBLICATION/ISSUE REVIEW COMPLETE |
| Status Date | Wednesday, April 29, 2026 |
| Registration Number | 0000000 |
| Registration Date | NOT AVAILABLE |
| Mark Drawing | 4 - Illustration: Drawing with word(s) / letter(s) / number(s) in Block form |
| Published for Opposition Date | Tuesday, May 19, 2026 |
| Goods and Services | Engineering services and consultation for the detection of contaminants in waste water; Planning and design of waste water treatment systems and technologies; Engineering design services in the field of waste water treatment |
| Goods and Services | Consulting services in the field of waste water treatment; Waste water treatment services; Environmental remediation services, namely, treatment of wastewater |
| International Class | 040 - Treatment of materials. |
| US Class Codes | 100, 103, 106 |
| Class Status Code | 6 - Active |
| Class Status Date | Wednesday, December 17, 2025 |
| Primary Code | 040 |
| First Use Anywhere Date | Saturday, January 1, 1983 |
| First Use In Commerce Date | Saturday, January 1, 1983 |
| International Class | 042 - Scientific and technological services and research and design relating thereto; industrial analysis and research services; design and development of computer hardware and software. |
| US Class Codes | 100, 101 |
| Class Status Code | 6 - Active |
| Class Status Date | Wednesday, December 17, 2025 |
| Primary Code | 042 |
| First Use Anywhere Date | Saturday, January 1, 1983 |
| First Use In Commerce Date | Saturday, January 1, 1983 |
| Party Name | Lemna Environmental Technologies, Inc. |
| Party Type | 10 - Original Applicant |
| Legal Entity Type | 03 - Corporation |
| Address | Vadnais Heights, MN 55110 US |
| Event Date | Event Description |
| Wednesday, December 17, 2025 | NEW APPLICATION ENTERED |
| Wednesday, December 17, 2025 | NEW APPLICATION OFFICE SUPPLIED DATA ENTERED |
| Wednesday, December 17, 2025 | APPLICATION FILING RECEIPT MAILED |
| Monday, April 20, 2026 | ASSIGNED TO EXAMINER |
| Wednesday, April 22, 2026 | APPROVED FOR PUB - PRINCIPAL REGISTER |