Geometrical instruments – Straightedge type – Wall guide and plumb
Reexamination Certificate
2007-09-04
2007-09-04
Smith, R. Alexander (Department: 2859)
Geometrical instruments
Straightedge type
Wall guide and plumb
Reexamination Certificate
active
11429621
ABSTRACT:
A brick laying alignment apparatus comprising two identical holders fitted with stagger bolts and guide pins. Each holder further comprises a vee on the first end, the vee having a ramp on either side and a wedge in the base of the vee for removable string engagement. The string is pulled taught between the holders, thereby holding them in place on remotely positioned bricks to be used in aligning further bricklaying.
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patent: D347798 (1994-06-01), Tindoll
patent: 2666366 (1992-03-01), None
Crossley Mark Ashley
Crossley Patent Law
Smith R. Alexander
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