US3494112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clean air work station
Assignee: Dexon Inc
•
Filing: 1969-04-16
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Granted: 1970-02-10
•
Expires: 1989-04-16
Abstract
No abstract record available.
Inventors
- 👤 Peter C Deckas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:46
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/16; F24F3/163; B; B08; B08B; B08B15/00; B08B15/02; B08B15/023; B08B2215/00; B08B2215/003; Y; Y10; Y10S; Y10S55/00; Y10S55/18; Y10S55/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1778046A
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US2833122A
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US2855762A
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GB909924A
Cited
US3151929A
Cited
US3212424A
Cited
US3251177A
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US3318076A
Cited
US3290866A
Cited
US3284148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |