US3450333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installations for sucking off and separation of waste products of working machines and centrifugal air pumps for use with it
Assignee: Individual
•
Filing: 1967-01-23
•
Granted: 1969-06-17
•
Expires: 1987-01-23
Abstract
No abstract record available.
Inventors
- 👤 Casper Nihot
- 👤 Evert Rudolf Nihot
- 👤 Petrus Andre Henri Saueressig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:48
CPC Classifications
F; F04; F04D; F04D23/00; F04D23/001; F04D23/003; B; B23; B23Q; B23Q11/00; B23Q11/0042; B24; B24B; B24B55/00; B24B55/06; Y; Y02; Y02P; Y02P70/00; Y02P70/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US449743A
Cited
DE502158C
Cited
CH105617A
Cited
GB218097A
Cited
DE418544C
Cited
GB236452A
Cited
US2289474A
Cited
US2282015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |