US3469309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing squirrel-cage rotor
Assignee: Singer General Precision Inc
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Filing: 1967-07-19
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Granted: 1969-09-30
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Expires: 1987-07-19
Abstract
No abstract record available.
Inventors
- 👤 Morton Sagalow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:27
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/16; B; B21; B21D; B21D26/00; B21D26/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012; Y10T29/49803; Y10T29/49826; Y10T29/49833; Y10T29/49835; Y10T29/49837
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |