Leveling device with slots and notched top for securement to...

Details Leveling device with slots and notched top for securement to... Leveling device with slots and notched top for securement to...

2003-04-08

2004-04-13

Davis, Antoine Duval (Department: 2913)

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Geometric

Design Patent

active

D0488398

CLAIM:
The ornamental design for a leveling device with slots and notched top for securement to ladder step/rung, as shown and described.

REFERENCES:
patent: 2147052 (1939-02-01), Noone
patent: 2449609 (1948-09-01), Linder et al.
patent: 2535791 (1950-12-01), Fluke
patent: 2789363 (1957-04-01), Miley
patent: D189210 (1960-11-01), Davis
patent: 3173512 (1965-03-01), Sturdy et al.
patent: 3233702 (1966-02-01), Feltrop
patent: D257671 (1980-12-01), Elliott
patent: D268909 (1983-05-01), Doan
patent: 4683980 (1987-08-01), Vayko
patent: 5044468 (1991-09-01), Worthington, Jr.
patent: 5680707 (1997-10-01), Boelling
patent: 6026581 (2000-02-01), Gruetzmacher

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