US679926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of filaments for incandescing electric lamps.
Assignee: Individual
•
Filing: 1900-11-19
•
Granted: 1901-08-06
•
Expires: 1920-11-19
Abstract
No abstract record available.
Inventors
- 👤 William Lawrence Voelker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:15
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/32; C23C14/325
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) | 1904-08-05 | 1905-02-04 | 1905-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-08-05 | 1909-02-04 | 1909-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-08-05 | 1913-02-04 | 1913-08-06 | $7700.00 | Window Closed / Lapsed |