Combination ring timer and lap counter

Details Combination ring timer and lap counter Combination ring timer and lap counter

1991-11-20

1992-09-29

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Volume, flow or rate

D11 2, D10 31, D10 32, D10 40

Patent

active

D03298205

REFERENCES:
patent: D266312 (1982-09-01), Lin
patent: D323787 (1992-02-01), Moorman
patent: 902606 (1908-11-01), Robbins
patent: 1718113 (1929-06-01), Cohen et al.
patent: 1740060 (1929-12-01), Baum
patent: 1743563 (1930-01-01), Montuori
patent: 1935479 (1933-11-01), Maurette
patent: 2074643 (1937-03-01), Domenego
patent: 3019635 (1962-02-01), Kling
Swimming World Sep. 1991, pp. 41-42 Hammecker Schlemmer Summer 1992 Catalog.

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