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US794902A
Expired / Lapsed
US
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Arc-light electrode.
Assignee: Individual
•
Filing: 1903-07-06
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Granted: 1905-07-18
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Expires: 1923-07-06
Abstract
No abstract record available.
Inventors
- 👤 Friedrich Otto Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:34
CPC Classifications
H; H05; H05B; H05B31/00; H05B31/02; H05B31/06; H05B31/08; H05B31/10
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) | 1908-07-17 | 1909-01-16 | 1909-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-07-17 | 1913-01-16 | 1913-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-07-17 | 1917-01-16 | 1917-07-18 | $7700.00 | Window Closed / Lapsed |