US3423988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Meter prover apparatus
Assignee: M&J Valve Co
•
Filing: 1966-08-01
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Granted: 1969-01-28
•
Expires: 1986-08-01
Abstract
No abstract record available.
Inventors
- 👤 Marvin H Grove
- 👤 Lyle R Van Arsdale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:41
CPC Classifications
F; F17; F17D; F17D3/00; F17D3/03; F17D3/08; G; G01; G01F; G01F25/00; G01F25/10; G01F25/11
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) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |