US2683984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscosity measuring device
Assignee: Dobbie Mcinnes Ltd
•
Filing: 1951-01-02
•
Granted: 1954-07-20
•
Expires: 1971-01-02
Abstract
No abstract record available.
Inventors
- 👤 Boyle Archibald Raymond
- 👤 Hewitt Maurice Charles Paton
- 👤 More Jasper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:47
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/10; G01N11/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1695279A
Cited
US2344331A
Cited
US2369027A
Cited
US2454340A
Cited
AT163374B
Cited
US2539436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |