Patent US3398882A successfully refreshed from Google Patents.
US3398882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crossflow blower
Assignee: Individual
•
Filing: 1966-03-29
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Granted: 1968-08-27
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Expires: 1986-03-29
Abstract
No abstract record available.
Inventors
- 👤 Zenkner Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:26
CPC Classifications
F; F04; F04D; F04D17/00; F04D17/02; F04D17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR1103927A
Cited
US3161348A
Cited
FR1250046A
Cited
US3209989A
Cited
GB963016A
Cited
US3181777A
Cited
US3325089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |