Patent US3289016A successfully refreshed from Google Patents.
US3289016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling control device
Assignee: Individual
•
Filing: 1963-07-22
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Granted: 1966-11-29
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Expires: 1983-07-22
Abstract
No abstract record available.
Inventors
- 👤 Walter L Bloom
- 👤 Robert E Meek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:05
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
108 words
A TIMING DEVICE FOR DETERMINING WHEN A SWITCH HAS BEEN OPEN FOR A PREDETERMINED LENGTH OF TIME INCLUDING A CAPACITOR AND A FIRST RESISTOR CONNECTED IN SERIES AND FORMING A FIRST CIRCUIT, AN ELECTRONIC SWITCH, A SECOND RESISTOR AND A RELAY COIL BEING CONNECTED IN SERIES AND FORMING A SECOND CIRCUIT, SAID FIRST CIRCUIT AND SAID SECOND CIRCUIT BEING CONNECTED IN PARALLEL, MEANS FOR IMPRESSING A VOLTAGE ACROSS SAID FIRST CIRCUIT AND SAID SECOND CIRCUIT, SAID SWITCH BEING CONNECTED IN PARALLEL WITH SAID CAPACIITOR SO THAT, WHEN SAID SWITCH IS OPEN, SAID CAPACITOR WILL BE CHARGED, SAID ELECTRONIC SWITCH MEANS BEING CONTROLLED BY THE CHARGE ON SAID CAPACITOR.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |