Patent US2103758A successfully refreshed from Google Patents.
US2103758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ground connection for electrical appliances
Assignee: Apex Electrical Manufacturing Co
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Filing: 1933-08-08
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Granted: 1937-12-28
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Expires: 1953-08-08
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Seyfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:31
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/0072
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-12-27 | 1941-06-28 | 1941-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-12-27 | 1945-06-28 | 1945-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-12-27 | 1949-06-28 | 1949-12-28 | $7700.00 | Window Closed / Lapsed |