Patent US2828358A successfully refreshed from Google Patents.
Patent US2072302A successfully refreshed from Google Patents.
Patent US2653294A successfully refreshed from Google Patents.
Patent US2304604A successfully refreshed from Google Patents.
Patent US2631437A successfully refreshed from Google Patents.
US2631437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid metering dispenser
Assignee: PRODUCTION CONTROL UNITS
•
Filing: 1948-12-24
•
Granted: 1953-03-17
•
Expires: 1968-12-24
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Bruce
- 👤 Robert S Goebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:54
CPC Classifications
G; G01; G01F; G01F3/00; G01F3/02; G01F3/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |