US2628769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blower
Assignee: Lau Blower Co
•
Filing: 1947-03-17
•
Granted: 1953-02-17
•
Expires: 1967-03-17
Abstract
No abstract record available.
Inventors
- 👤 Carl E Wilken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:40
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/28; F04D29/281; F04D29/282; F04D29/283; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49329; Y10T29/49826; Y10T29/49908; Y10T29/49936
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1085089A
Cited
US1484579A
Cited
US1995759A
Cited
US2006458A
Cited
US2051216A
Cited
US2208835A
Cited
US2125697A
Cited
US2181592A
Cited
US2242586A
Cited
US2272695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |