Apparatus for removable insertion into an excavated trench to protect worker against collapse of trench wall
CA3321228A1Pending Publication Date: 2026-09-21KIRBY W ISAAC
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Patent Information
- Application Number
- CA3321228
- Authority / Receiving Office
- CA · CA
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2019-03-25
- Filing Date
- 2019-12-12
- Publication Date
- 2026-09-21
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