US2493880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas meter valve
Assignee: Individual
•
Filing: 1944-05-19
•
Granted: 1950-01-10
•
Expires: 1964-05-19
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Korfmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:36
CPC Classifications
G; G01; G01F; G01F15/00; G01F15/005; F; F16; F16K; F16K3/00; F16K3/30; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86815
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US722390A
Cited
US828280A
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US1814608A
Cited
US1649235A
Cited
US1854651A
Cited
FR722410A
Cited
GB392279A
Cited
US1835686A
Cited
US2271391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |