US1487937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extension cord
Assignee: Individual
•
Filing: 1921-12-10
•
Granted: 1924-03-25
•
Expires: 1941-12-10
Abstract
No abstract record available.
Inventors
- 👤 Iorne A Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:29
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/06
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) | 1927-03-25 | 1927-09-24 | 1928-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-03-25 | 1931-09-24 | 1932-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-03-25 | 1935-09-24 | 1936-03-25 | $7700.00 | Window Closed / Lapsed |