Lock for an extension pole

Details Lock for an extension pole Lock for an extension pole

1988-01-29

1991-03-12

Burke, Wallace R.

Tools and hardware

Locking or closing device

Lock, latch or bolt

Patent

active

D03152863

REFERENCES:
patent: 933248 (1909-09-01), Grant
patent: 1278100 (1918-10-01), Bruning
patent: 1365703 (1921-01-01), Kolb
patent: 2545813 (1946-08-01), Jackson
patent: 2682414 (1954-06-01), Richardson
patent: 2875007 (1959-02-01), Fox
patent: 3026592 (1962-03-01), Dudley
patent: 3704850 (1972-12-01), Hendrickson et al.
patent: 4586399 (1986-05-01), Kassai

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