US3283906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: CLEVELAND ELECTRIC ILLUMINATIN
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Filing: 1963-12-19
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Granted: 1966-11-08
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Expires: 1983-12-19
Abstract
No abstract record available.
Inventors
- 👤 Alfred W Crane
- 👤 Dittrich Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:55
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/70; B01D33/76; B01D33/15; B01D33/21; B01D33/23; B01D33/44; B01D33/46; B01D33/466; B01D33/58; B01D33/62; B01D33/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |