US3503259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct sampler for use in basic oxygen furnaces and the like
Assignee: Westinghouse Electric Corp
•
Filing: 1967-06-27
•
Granted: 1970-03-31
•
Expires: 1987-06-27
Abstract
No abstract record available.
Inventors
- 👤 Norman R Carlson
- 👤 Richard E J Putman
- 👤 James T Carleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:15
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/12; G01N1/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2463427A
Cited
US3038951A
Cited
US3250125A
Cited
GB1025026A
Cited
US3288654A
Cited
US3313159A
Cited
US3357250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |