Patent US3497806A successfully refreshed from Google Patents.
US3497806A
Expired / Lapsed
US
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Miniaturized high torque,single air gap meter mechanism
Assignee: Sigma Instruments Inc
•
Filing: 1964-11-02
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Granted: 1970-02-24
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Expires: 1984-11-02
Abstract
No abstract record available.
Inventors
- 👤 Julius Nador
- 👤 Harry Magoveny
- 👤 Leon E Thomas Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:13
CPC Classifications
G; G01; G01R; G01R5/00; G01R5/02; G01R5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1378983A
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US2550936A
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US3039055A
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US3130365A
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US3272589A
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US3298351A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |