Patent US3022969A successfully refreshed from Google Patents.
US3022969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilator
Assignee: Licentia Patent Verwaltungs GmbH
•
Filing: 1958-09-16
•
Granted: 1962-02-27
•
Expires: 1978-09-16
Abstract
No abstract record available.
Inventors
- 👤 Fleckenstein Hans
- 👤 Sieber Peter
- 👤 Kiesow Lothar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:33
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/64; F04D29/644; F04D29/646
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE456372C
Cited
US760591A
Cited
US1156901A
Cited
US1703099A
Cited
US1947941A
Cited
US2212555A
Cited
US2270575A
Cited
US2434130A
Cited
US2615619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |