US2850228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blower
Assignee: Individual
•
Filing: 1956-10-30
•
Granted: 1958-09-02
•
Expires: 1976-10-30
Abstract
No abstract record available.
Inventors
- 👤 Rowley Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:29
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/08; F04D25/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US828383A
Cited
US1108053A
Cited
US1254042A
Cited
US1832899A
Cited
GB476291A
Cited
US2201506A
Cited
GB557890A
Cited
US2432067A
Cited
US2595406A
Cited
US2711287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |