Patent US2722837A successfully refreshed from Google Patents.
US2722837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure gauge
Assignee: F W DWYER Manufacturing CO
•
Filing: 1950-11-10
•
Granted: 1955-11-08
•
Expires: 1970-11-10
Abstract
No abstract record available.
Inventors
- 👤 James G Dwyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:41
CPC Classifications
G; G01; G01L; G01L7/00; G01L7/02; G01L7/08; G01L7/084
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1146202A
Cited
US1504785A
Cited
US1739297A
Cited
US1841651A
Cited
US1870058A
Cited
US2084623A
Cited
US2079069A
Cited
US2223640A
Cited
US2340395A
Cited
US2339847A
Cited
US2509644A
Cited
US2417449A
Cited
US2503372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |