Patent US3030534A successfully refreshed from Google Patents.
US3030534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single phase alternating current motor
Assignee: Individual
•
Filing: 1960-05-24
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Granted: 1962-04-17
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Expires: 1980-05-24
Abstract
No abstract record available.
Inventors
- 👤 Henry H Hammerstrom
- 👤 Lee B Woodruff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:02
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/04; H02K17/08
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) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |