Patent US3049148A successfully refreshed from Google Patents.
US3049148A
Expired / Lapsed
US
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Calibration valve
Assignee: Individual
•
Filing: 1962-03-20
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Granted: 1962-08-14
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Expires: 1982-03-20
Abstract
No abstract record available.
Inventors
- 👤 John R Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:25
CPC Classifications
F; F16; F16K; F16K37/00; F16K37/0075; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/07; F16K11/0716; F16L; F16L37/00; F16L37/28; F16L37/30; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86815; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692; Y10T137/87917; Y10T137/87925; Y10T137/87941; Y10T137/87949; Y10T137/87957
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) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |