US3013465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractometer for industrial process control
Assignee: Barnes Engineering Co
•
Filing: 1956-07-06
•
Granted: 1961-12-19
•
Expires: 1976-07-06
Abstract
No abstract record available.
Inventors
- 👤 Philip W Collyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:55
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/41; G01N21/4133
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2285658A
Cited
US2427996A
Cited
US2569127A
Cited
US2583973A
Cited
US2724304A
Cited
US2762254A
Cited
US2783676A
Cited
US2771149A
Cited
US2810315A
Cited
US2827824A
Cited
US2857803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |