US3525093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric signal integrating apparatus
Assignee: Elster Metering Holdings Ltd
•
Filing: 1966-12-21
•
Granted: 1970-08-18
•
Expires: 1986-12-21
Abstract
No abstract record available.
Inventors
- 👤 Richard Carlile Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:43
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/48; G06G7/75; G01; G01N; G01N30/00; G01N30/02; G01N30/86; G01N30/8603
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2754503A
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US3048336A
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US3182303A
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US3188455A
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US3255447A
Cited
US3439271A
Cited
US3439272A
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US3414898A
Cited
US3368149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |