US3482377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilation appliances for a processing chamber
Assignee: Reactor Centrum Nederland
•
Filing: 1967-06-07
•
Granted: 1969-12-09
•
Expires: 1987-06-07
Abstract
No abstract record available.
Inventors
- 👤 Wilhelmus K A Walrave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:08
CPC Classifications
G; G21; G21C; G21C13/00; G21C13/02; G21C13/022; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S55/00; Y10S55/09; Y10T; Y10T137/00; Y10T137/5762; Y10T137/7722; Y10T137/7723; Y10T137/7728
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |