US2349620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating rotors
Assignee: Hansen Manufacturing Co Inc
•
Filing: 1940-12-02
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Granted: 1944-05-23
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Expires: 1960-12-02
Abstract
No abstract record available.
Inventors
- 👤 William L Hansen
- 👤 Ira N Hurst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:25
CPC Classifications
B; B21; B21D; B21D53/00; H; H02; H02K; H02K15/00; H02K15/02; H02K19/00; H02K19/02; H02K19/04; H02K19/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012
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) | 1947-05-23 | 1947-11-22 | 1948-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-05-23 | 1951-11-22 | 1952-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-05-23 | 1955-11-22 | 1956-05-23 | $7700.00 | Window Closed / Lapsed |