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Drilling method and apparatus using variable dwell times

Cutting by use of rotating axially moving tool – Processes – Bit detachable
Patent

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Drilling method and relevant drilling machine for stacked boards

Cutting by use of rotating axially moving tool – With means to regulate operation by use of templet – tape,...
Patent

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Drilling printed circuit boards and entry and backing boards the

Cutting by use of rotating axially moving tool – Processes – Bit detachable
Patent

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Drilling spindle with pressure foot shutter

Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Having tool-opposing – work-engaging surface
Patent

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Drilling stand

Cutting by use of rotating axially moving tool – Machine frame
Patent

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Drilling system with stationary work table

Cutting by use of rotating axially moving tool – Machine including plural tools – Plural – simultaneously operational tools
Reexamination Certificate

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Drilling tool

Cutting by use of rotating axially moving tool – Tool or tool with support – Having stepped cutting edges
Patent

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Drilling tool

Cutting by use of rotating axially moving tool – With means to apply transient – fluent medium to work or product
Patent

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Drilling tool

Cutting by use of rotating axially moving tool – Tool or tool with support – Having stepped cutting edges
Reexamination Certificate

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Drilling tool

Cutting by use of rotating axially moving tool – With product handling or receiving means
Patent

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Drilling tool

Cutting by use of rotating axially moving tool – Tool or tool with support – Having peripherally spaced cutting edges
Patent

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Drilling tool

Cutting by use of rotating axially moving tool – With means to apply transient – fluent medium to work or product – Including tool with duct
Patent

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Drilling tool

Cutting by use of rotating axially moving tool – Tool or tool with support – Having axial – core-receiving central portion
Patent

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Drilling tool

Cutting by use of rotating axially moving tool – Tool-support with means to move tool relative to tool-support – To move radially
Reexamination Certificate

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Drilling tool

Cutting by use of rotating axially moving tool – Tool or tool with support – With pitch-stabilizing ridge
Reexamination Certificate

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Drilling tool

Cutting by use of rotating axially moving tool – Tool-support with means to move tool relative to tool-support – To move radially
Reexamination Certificate

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Drilling tool

Cutting by use of rotating axially moving tool – Tool-support – With tool-retaining means
Patent

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Drilling tool

Cutting by use of rotating axially moving tool – Tool or tool with support – Having stepped cutting edges
Reexamination Certificate

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Drilling tool

Cutting by use of rotating axially moving tool – Tool or tool with support – Having peripherally spaced cutting edges
Reexamination Certificate

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Drilling tool

Cutting by use of rotating axially moving tool – Tool or tool with support – Having stepped cutting edges
Patent

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