US3021591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making blower rotor
Assignee: RUTH D MANE
•
Filing: 1953-10-12
•
Granted: 1962-02-20
•
Expires: 1973-10-12
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Leis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:24
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/26; B21D53/267; B23; B23P; B23P15/00; B23P15/006; 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)
US504208A
Cited
GB190409240A
Cited
US900739A
Cited
US903532A
Cited
US978036A
Cited
US1748452A
Cited
US2125697A
Cited
US2181592A
Cited
US2242586A
Cited
US2240238A
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US2231063A
Cited
US2304581A
Cited
US2315407A
Cited
US2431647A
Cited
US2392113A
Cited
US2537805A
Cited
US2745171A
Cited
US2711285A
Cited
GB670392A
Cited
US2626741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |