Patent US1777943A successfully refreshed from Google Patents.
Patent US2673941A successfully refreshed from Google Patents.
US2673941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightning arrester
Assignee: Westinghouse Electric Corp
•
Filing: 1950-09-15
•
Granted: 1954-03-30
•
Expires: 1970-09-15
Abstract
No abstract record available.
Inventors
- 👤 Val Eugene J De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:39
CPC Classifications
H; H01; H01T; H01T1/00; H01T1/02; H01T1/08; H01T1/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2171226A
Cited
US2156988A
Cited
FR852810A
Cited
US2179297A
Cited
US2443605A
Cited
US2414308A
Cited
FR966217A
Cited
US2619610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |