US672770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric-arc lamp.
Assignee: Individual
•
Filing: 1901-01-21
•
Granted: 1901-04-23
•
Expires: 1921-01-21
Abstract
No abstract record available.
Inventors
- 👤 Charles Holmok
- 👤 Julius Holmok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:04
CPC Classifications
H; H05; H05B; H05B31/00; H05B31/0081; H05B31/0084
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) | 1904-04-22 | 1904-10-22 | 1905-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-04-22 | 1908-10-22 | 1909-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-04-22 | 1912-10-22 | 1913-04-23 | $7700.00 | Window Closed / Lapsed |