US3495379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharge electrode configuration
Assignee: Research Cottrell Inc
•
Filing: 1967-07-28
•
Granted: 1970-02-17
•
Expires: 1987-07-28
Abstract
No abstract record available.
Inventors
- 👤 Herbert J Hall
- 👤 Myron Robinson
- 👤 Joseph Shepard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:28
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/40; B03C3/41; Y; Y10; Y10S; Y10S55/00; Y10S55/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2870861A
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US2822058A
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US2867287A
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GB846522A
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US2917130A
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US3354617A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |