US1128327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined safety-valve and pressure-gage.
Assignee: JOHN WATCHPOCKET
•
Filing: 1913-03-31
•
Granted: 1915-02-16
•
Expires: 1933-03-31
Abstract
No abstract record available.
Inventors
- 👤 Edward B Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:01
CPC Classifications
G; G01; G01L; G01L19/00; G01L19/0007; G01L17/00; G01L7/00; G01L7/02; G01L7/08; G01L7/084; G01L7/088
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1918-02-15 | 1918-08-17 | 1919-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-02-15 | 1922-08-17 | 1923-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-02-15 | 1926-08-17 | 1927-02-16 | $7700.00 | Window Closed / Lapsed |