Patent US2781114A successfully refreshed from Google Patents.
Patent US3982142A successfully refreshed from Google Patents.
Patent US2694547A successfully refreshed from Google Patents.
US2694547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve structure
Assignee: EDWARD VALVES Inc
•
Filing: 1950-11-15
•
Granted: 1954-11-16
•
Expires: 1970-11-15
Abstract
No abstract record available.
Inventors
- 👤 Macgregor David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:08
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US386647A
Cited
US756731A
Cited
US1937246A
Cited
US1891374A
Cited
US1866292A
Cited
US1925392A
Cited
US1881269A
Cited
US2261269A
Cited
US2301976A
Cited
US2316957A
Cited
US2555262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |