US3566678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass measuring system
Assignee: Merrick Scale Manufacturing Co
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Filing: 1968-04-24
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Granted: 1971-03-02
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Expires: 1988-04-24
Abstract
Abstract THE PRESENT INVENTION COMPRISES AN ELASTIC MEMBER DEFLECTED AND OSCILLATED BY A LOAD, ELECTROMAGNETIC MEANS TO EXCITE AND SUSTAIN THE OSCILLATION OF THE ELASTIC MEMBER, A TRANSFORMER ACTUATED BY THE OSCILLATION OF THE ELASTIC MEMBER AND ELECTRICALLY CONNECTED TO THE ELECTROMAGNETIC MEANS, AND MEANS ELECTRICALLY CONNECTED TO THE ELECTROMAGNETIC MEANS AND THE TRANSFORMER TO COUNT THE OSCILLATIONS AND INCLUDING A DIFFERENTIAL PULSE SYSTEM.
Inventors
- 👤 John L Christmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:33
CPC Classifications
G; G01; G01G; G01G3/00; G01G3/12; G01G3/16; G01G11/00; G01G11/04; G01G11/043; G01G11/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |