US1913591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and process for making fan rotors
Assignee: AMERICAN BLOWER Corp
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Filing: 1931-03-13
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Granted: 1933-06-13
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Expires: 1951-03-13
Abstract
No abstract record available.
Inventors
- 👤 Graf Raymond Ivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:32
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/78; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49329; Y10T83/00; Y10T83/444; Y10T83/4501; Y10T83/4503; Y10T83/4511; Y10T83/566; Y10T83/5815; Y10T83/5842; Y10T83/5851
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-06-12 | 1936-12-12 | 1937-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-06-12 | 1940-12-12 | 1941-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-06-12 | 1944-12-12 | 1945-06-13 | $7700.00 | Window Closed / Lapsed |