US3496856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-cleaning surfaces for particleladen atmospheres
Assignee: WS ROCKWELL COMPANY 200 ELIOT STREET FAIRFIELD CT A CORP OF NJ
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Filing: 1968-05-07
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Granted: 1970-02-24
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Expires: 1988-05-07
Abstract
No abstract record available.
Inventors
- 👤 Richard F Wiggins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:06
CPC Classifications
B; B05; B05B; B05B14/00; B05B14/40; B05B14/41; B05B14/412; B05B16/00; B05B16/40; B05B16/60
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) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |