asfentshirts.blogg.se - Physical countdown timers

PHYSICAL COUNTDOWN TIMERS PDF

G04F1/005- Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g.

G04F1/00- Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g.

230000001276 controlling effect Effects 0.000 description 1.

238000003786 synthesis reaction Methods 0.000 description 2.

238000006011 modification reaction Methods 0.000 description 2.

230000015572 biosynthetic process Effects 0.000 description 2.

230000000750 progressive Effects 0.000 abstract description 2.

230000003247 decreasing Effects 0.000 abstract description 2.

239000004416 thermosoftening plastic Substances 0.000 claims description 2.

229920001169 thermoplastic Polymers 0.000 claims description 2.

230000000875 corresponding Effects 0.000 claims description 3.

230000002194 synthesizing Effects 0.000 claims description 6.

Ketcham Priority to US06/459,371 priority Critical patent/US4451158A/en Priority to AU27636/84A priority patent/AU2763684A/en Application granted granted Critical Publication of US4451158A publication Critical patent/US4451158A/en Anticipated expiration legal-status Critical Status Expired - Fee Related legal-status Critical Current Links Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by William P. Ketcham Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number US06/459,371 Inventor Stephen Selwyn William P.

PHYSICAL COUNTDOWN TIMERS PDF

Google Patents US4451158A - Countdown timerĭownload PDF Info Publication number US4451158A US4451158A US06/459,371 US45937183A US4451158A US 4451158 A US4451158 A US 4451158A US 45937183 A US45937183 A US 45937183A US 4451158 A US4451158 A US 4451158A Authority US United States Prior art keywords countdown time timer housing countdown timer Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.