Patent US2806148A successfully refreshed from Google Patents.
US2806148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric analyzer
Assignee: Phillips Petroleum Co
•
Filing: 1952-03-31
•
Granted: 1957-09-10
•
Expires: 1972-03-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Hugh M Barton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:10
CPC Classifications
G; G05; G05B; G05B11/00; G05B11/01; G05B11/012; G05B11/017
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE23023E
Cited
US1746525A
Cited
US2019871A
Cited
US2142378A
Cited
US2358103A
Cited
US2342986A
Cited
US2522976A
Cited
US2547212A
Cited
US2593616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |