US1075768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc-lamp electrode.
Assignee: GEORGE N NELSON
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Filing: 1913-03-31
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Granted: 1913-10-14
•
Expires: 1933-03-31
Abstract
No abstract record available.
Inventors
- 👤 Frank R Crane Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:18
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/22
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) | 1916-10-13 | 1917-04-14 | 1917-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-10-13 | 1921-04-14 | 1921-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-10-13 | 1925-04-14 | 1925-10-14 | $7700.00 | Window Closed / Lapsed |