US3611577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromicrometer
Assignee: Tropel Inc
•
Filing: 1970-01-29
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Granted: 1971-10-12
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Expires: 1990-01-29
Abstract
Abstract A PIEZOELECTRIC CRYSTAL IS ARRANGED BETWEEN THE MOUNTING SLEEVE OF A STANDARD MICORMETER AND AN AUXILIARY MOUNTING SLEEVE FIXED TO A MOUNTING STRUCTURE AND THE DIMENSION OF THE PIEZOELECTRIC MEMBER IS VARIABLE IN THE DIRECTION OF RELATIVE OF THE MICROMETER SPINDLE SO THAT A VOLTAGE APPLIED TO THE PIEZOELECTRIC MEMBER CHANGES THE DISTANCE BETWEEN THE MOUNTING STRUCURE AND THE MICROMETER SLEEVE FOR FINE ADJACENT OF THE MICROMETER.
Inventors
- 👤 Abbott M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:33
CPC Classifications
H; H02; H02N; H02N2/00; H02N2/02; H02N2/04; G; G01; G01B; G01B3/00; G01B3/18
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |