Patent US3531663A successfully refreshed from Google Patents.
US3531663A
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Integral heater piezoelectric devices
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1968-11-26
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Granted: 1970-09-29
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Expires: 1988-11-26
Abstract
No abstract record available.
Inventors
- 👤 William H King Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:26
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/02; G01N29/036; G01H; G01H13/00; G01N25/00; G01N25/18; G01R; G01R19/00; G01R21/00; G01R21/02; G01R29/00; G01R29/22; G01R5/00; G01R5/22; H; H03; H03H; H03H9/00; H03H9/02; H03H9/05; H03H9/08; H05; H05B; H05B3/00; H05B3/20; H05B3/22; H05B3/26; G01N2291/00; G01N2291/02; G01N2291/025; G01N2291/0256
Claims Analysis
Total Claims: 0
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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) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |