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Roller mounting

Excavating – Snow or ice removing or grooming by portable device – Railway clearer
Patent

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Roof plow

Excavating – Snow or ice removing or grooming by portable device – Scoop
Patent

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Roof rake

Excavating – Snow or ice removing or grooming by portable device – Manually powered
Patent

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Roof rake

Excavating – Snow or ice removing or grooming by portable device – Manually powered
Patent

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Roof snow removal apparatus

Excavating – Snow or ice removing or grooming by portable device – Manually powered
Reexamination Certificate

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Roof snow removal device

Excavating – Snow or ice removing or grooming by portable device – Manually powered
Patent

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Rotary drive contained within hollow rotating drum

Excavating – Snow or ice removing or grooming by portable device – Motorized rotary excavating tool
Reexamination Certificate

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Rotary snow plough

Excavating – Snow or ice removing or grooming by portable device – Motorized rotary excavating tool
Patent

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Rotary snow plough

Excavating – Snow or ice removing or grooming by portable device – With endless conveyor
Patent

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Rotary snow plow

Excavating – Snow or ice removing or grooming by portable device – With endless conveyor
Reexamination Certificate

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Rotary snow plow with feeding mechanisms

Excavating – Snow or ice removing or grooming by portable device – Motorized rotary excavating tool
Patent

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Rotary sweeper attachment

Excavating – Snow or ice removing or grooming by portable device – Motorized rotary excavating tool
Patent

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Rotary tiller for maintaining cross country ski trails

Excavating – Snow or ice removing or grooming by portable device – Process
Patent

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Rotatable support wheels for a snowplow

Excavating – Snow or ice removing or grooming by portable device – With specific means to facilitate connection to – or...
Patent

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Rub link assembly for dragline bucket

Excavating – Snow or ice removing or grooming by portable device – Railway clearer
Patent

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Rubberized wear pad assembly and method of making same

Excavating – Snow or ice removing or grooming by portable device – Scoop
Patent

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