Patent US2570322A successfully refreshed from Google Patents.
US2570322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow metering device
Assignee: Individual
•
Filing: 1948-02-04
•
Granted: 1951-10-09
•
Expires: 1968-02-04
Abstract
No abstract record available.
Inventors
- 👤 Emanuel H Christopher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:44
CPC Classifications
G; G01; G01P; G01P13/00; G01P13/008; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8359; Y10T137/8593; Y10T137/87265; Y10T137/87298; Y10T137/87539
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US212758A
Cited
DE365721C
Cited
US797027A
Cited
US1047548A
Cited
DE377055C
Cited
US1942598A
Cited
US2035953A
Cited
US2196959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |