US3530705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Meter proving system with leak detection
Assignee: M&J Valve Co
•
Filing: 1968-06-10
•
Granted: 1970-09-29
•
Expires: 1988-06-10
Abstract
No abstract record available.
Inventors
- 👤 Francis M Lathrop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:55
CPC Classifications
G; G01; G01F; G01F25/00; G01F25/10; G01F25/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2635626A
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US2744537A
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US2948144A
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US3135278A
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US3252618A
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US3199527A
Cited
US3295357A
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US3387483A
Cited
US3423988A
Cited
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 |