US3172073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistors
Assignee: English Electric Co Ltd
•
Filing: 1962-03-30
•
Granted: 1965-03-02
•
Expires: 1982-03-30
Abstract
No abstract record available.
Inventors
- 👤 Bolton Eric
- 👤 Ancilewski Marian Kazimierz
- 👤 Hewitt John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:58
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US497366A
Cited
US515280A
Cited
US534699A
Cited
US621561A
Cited
GB177399A
Cited
US1711816A
Cited
US2542468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |