US3045173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer protective device
Assignee: McGraw Edison Co
•
Filing: 1959-05-01
•
Granted: 1962-07-17
•
Expires: 1979-05-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Gordon A Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:53
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/0005; H01H9/0027; H01F; H01F29/00; H01F29/02; H01F29/04; H01H9/0033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2151534A
Cited
US2677113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |