Patent US1678918A successfully refreshed from Google Patents.
US1678918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining and also indicating the total heating value of flowing combustible fluid
Assignee: Cutler Hammer Manufacturing Co
•
Filing: 1926-04-30
•
Granted: 1928-07-31
•
Expires: 1946-04-30
Abstract
No abstract record available.
Inventors
- 👤 Edwin X Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:08
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/20; G01N25/22; G01N25/40; G01N25/42
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) | 1931-07-31 | 1932-01-30 | 1932-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-07-31 | 1936-01-30 | 1936-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-07-31 | 1940-01-30 | 1940-07-31 | $7700.00 | Window Closed / Lapsed |