US2745171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a bladed structure
Assignee: Niagara Blower Co
•
Filing: 1949-09-08
•
Granted: 1956-05-15
•
Expires: 1969-09-08
Abstract
No abstract record available.
Inventors
- 👤 De Witt L King
- 👤 Robert C Stutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:30
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; Y10T29/49863; Y10T29/49876
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US741860A
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US1366667A
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US1484579A
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US1637652A
Cited
GB267405A
Cited
US1876518A
Cited
US1890226A
Cited
US2157441A
Cited
US2258050A
Cited
US2480804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |