US3526770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame photometer using photovoltaic cell having logarithmic response
Assignee: Babcock International Ltd
•
Filing: 1966-10-28
•
Granted: 1970-09-01
•
Expires: 1986-10-28
Abstract
No abstract record available.
Inventors
- 👤 Owen W Dumpleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:51
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/082; G; G01; G01J; G01J1/00; G01J1/42; G01J1/44; F23N2229/00; F23N2229/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2820945A
Cited
US2722677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |