US3374485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calibration apparatus for physiological and biological measuring and recording device
Assignee: Fritz Hellige und Co GmbH
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Filing: 1966-11-04
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Granted: 1968-03-19
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Expires: 1986-11-04
Abstract
No abstract record available.
Inventors
- 👤 Gemmer Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:31
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/30; A61B5/307; A61B5/308; A61B5/316; A61B5/318; A61B5/333
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A SYSTEM FOR MONITORING AND RECORDING ELECTRICAL SIGNALS COMPRISING: A SELECTOR RECEIVING A FIRST PLURALITY OF ELECTRICAL SIGNALS FOR PRODUCING AN OUTPUT SIGNAL CORRESPONDING TO PRESELECTED ONES OF SAID ELECTRICAL SIGNALS; A MONITORING INSTRUMENT FOR INDICATING THE VALUE OF APPLIED SIGNALS, SAID MONITORING INSTRUMENT INCLUDING A RECORDING MEDIUM AND A DRIVE MECHANISM FOR MOVING SAID RECORDING MEDIUM AT A SECOND PLURALITY OF DISTINCT SPEEDS; A SIGNAL GENERATOR FOR PRODUCING A CALIBRATION SIGNAL DISTINGUISHABLE FROM SAID OUTPUT SIGNAL OF SAID SELECTOR; CONTROL MEANS FOR ENERGIZING SAID MONITORING INSTRUMENT, SAID SIGNAL GENERATOR, AND SAID DRIVE MECHANISM AND FOR CHANGING THE SPEED AT WHICH SAID DRIVE MECHANISM MOVES SAID RECORDING MEDIUM; AND
Claim 2
Independent Claim
109 words
A SYSTEM FOR MONITORING AND RECORDING ELECTRICAL SIGNALS COMPRISING: A SELECTOR RECEIVING A FIRST PLURALITY OF ELECTRICAL SIGNALS FOR PRODUCING AN OUTPUT SIGNAL CORRESPONDING TO PRESELECTED ONES OF SAID ELECTRICAL SIGNALS; A MONITORING INSTRUMENT FOR INDICATING THE VALUE OF APPLIED SIGNALS, SAID MONITORING INSTRUMENT INCLUDING A RECORDING MEDIUM AND A DRIVE MECHANISM FOR MOVING SAID RECORDING MEDIUM AT A SECOND PLURALITY OF DISTINCT SPEEDS; A SIGNAL GENERATOR FOR PRODUCING A CALIBRATION SIGNAL DISTINGUISHABLE FROM SAID OUTPUT SIGNAL OF SAID SELECTOR; CONTROL MEANS FOR ENERGIZING SAID MONITORING INSTRUMENT, SAID SIGNAL GENERATOR, AND SAID DRIVE MECHANISM AND FOR CHANGING THE SPEED AT WHICH SAID DRIVE MECHANISM MOVES SAID RECORDING MEDIUM; AND
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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |