US3520822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam destruction device
Assignee: Nestec SA
•
Filing: 1968-04-15
•
Granted: 1970-07-21
•
Expires: 1988-04-15
Abstract
No abstract record available.
Inventors
- 👤 Knut Rude Traelnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:11
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; Y; Y10; Y10S; Y10S435/00; Y10S435/812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1067336A
Cited
US1454610A
Cited
US2703304A
Cited
FR1172408A
Cited
US3056831A
Cited
US3189080A
Cited
US3306710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-20 | 1974-01-19 | 1974-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-20 | 1978-01-19 | 1978-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-20 | 1982-01-19 | 1982-07-21 | $7700.00 | Window Closed / Lapsed |