Patent US3522568A successfully refreshed from Google Patents.
US3522568A
Expired / Lapsed
US
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Tape scale for position measuring transformer
Assignee: Inductosyn Corp
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Filing: 1969-03-13
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Granted: 1970-08-04
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Expires: 1989-03-13
Abstract
No abstract record available.
Inventors
- 👤 Harold J Hasbrouck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:49
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/002; G01B3/004; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/20; G01D5/204; G01D5/2073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1568470A
Cited
US2252919A
Cited
US2799835A
Cited
US2866946A
Cited
US2915722A
Cited
US3090934A
Cited
US3202948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |