US3148016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillograph recording improvement utilizing dual filament lamps
Assignee: CENTURY ELECTRONICS AND INSTRUMENTS Inc
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Filing: 1962-04-12
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Granted: 1964-09-08
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Expires: 1982-04-12
Abstract
No abstract record available.
Inventors
- 👤 James L Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:12
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A RECORDING SYSTEM OF THE TYPE INCLUDING A RECORDING MEDIUM AND MEANS FOR DIRECTING LIGHT ONTO SAID MEDIUM IN ACCORDANCE WITH THE CONDITIONS BEING RECORDED, THE IMPROVEMENT COMPRISING A LIGHT SOURCE FOR SAID SYSTEM, SAID LIGHT SOURCE INCLUDING A BULB AND A PAIR OF FILAMENTS DISPOSED WITHIN SAID BULB ADAPTED TO PASS LIGHT TO SAID DIRECTING MEANS WHEREBY TRACES ARE PRODUCED ON SAID RECORDING MEDIUM, A CIRCUIT INCLUDING MEANS FOR ENERGIZING SAID FILAMENTS AND MEANS IN SAID CIRCUIT FOR CONNECTING SAID ENERGIZING MEANS TO ONLY ONE OF SAID FILAMENTS AT A TIME.
Claim 2
Dependent Claim
93 words
IN A RECORDING SYSTEM OF THE TYPE INCLUDING A RECORDING MEDIUM AND MEANS FOR DIRECTING LIGHT ONTO SAID MEDIUM IN ACCORDANCE WITH THE CONDITIONS BEING RECORDED, THE IMPROVEMENT COMPRISING A LIGHT SOURCE FOR SAID SYSTEM, SAID LIGHT SOURCE INCLUDING A BULB AND A PAIR OF FILAMENTS DISPOSED WITHIN SAID BULB ADAPTED TO PASS LIGHT TO SAID DIRECTING MEANS WHEREBY TRACES ARE PRODUCED ON SAID RECORDING MEDIUM, A CIRCUIT INCLUDING MEANS FOR ENERGIZING SAID FILAMENTS AND MEANS IN SAID CIRCUIT FOR CONNECTING SAID ENERGIZING MEANS TO ONLY ONE OF SAID FILAMENTS AT A TIME.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |