US3521215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistor with end terminals
Assignee: Dale Electronics Inc
•
Filing: 1968-10-02
•
Granted: 1970-07-21
•
Expires: 1988-10-02
Abstract
No abstract record available.
Inventors
- 👤 James R O'keeffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:43
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/14; H01C1/148
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1745939A
Cited
US1892202A
Cited
US2055849A
Cited
GB527735A
Cited
FR981949A
Cited
FR1186579A
Cited
US3244953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-20 | 1974-01-19 | 1974-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-20 | 1978-01-19 | 1978-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-20 | 1982-01-19 | 1982-07-21 | $7700.00 | Window Closed / Lapsed |