Patent US1808709A successfully refreshed from Google Patents.
US1808709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for metering gaseous fluids
Assignee: United Gas Improvement Co
•
Filing: 1928-10-18
•
Granted: 1931-06-02
•
Expires: 1948-10-18
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:41
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/704; G01F1/708; G01F1/7088
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) | 1934-06-01 | 1934-12-01 | 1935-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-06-01 | 1938-12-01 | 1939-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-06-01 | 1942-12-01 | 1943-06-02 | $7700.00 | Window Closed / Lapsed |