US3017564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective circuit
Assignee: Individual
•
Filing: 1954-08-12
•
Granted: 1962-01-16
•
Expires: 1974-08-12
Abstract
No abstract record available.
Inventors
- 👤 Barney Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:37
CPC Classifications
H; H02; H02H; H02H9/00; H02H9/001; Y; Y10; Y10S; Y10S323/00; Y10S323/908
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1806796A
Cited
US809878A
Cited
US779875A
Cited
US1649391A
Cited
GB371084A
Cited
FR807105A
Cited
US2177832A
Cited
US2646489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |