US3175167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct-current to alternating-current saturable core inverters
Assignee: General Mills Inc
•
Filing: 1961-07-27
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Granted: 1965-03-23
•
Expires: 1981-07-27
Abstract
No abstract record available.
Inventors
- 👤 Allan G Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:29
CPC Classifications
H; H02; H02P; H02P27/00; H02P27/04; H02P27/06; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/5383
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2247057A
Cited
US3046495A
Cited
FR1230467A
Cited
US2970301A
Cited
US3047789A
Cited
US3120633A
Cited
GB867775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |