Patent US1008806A successfully refreshed from Google Patents.
US1008806A
Expired / Lapsed
US
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Metallic filaments for incandescent electric lamps.
Assignee: GUY V WILLIAMS
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Filing: 1909-08-09
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Granted: 1911-11-14
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Expires: 1929-08-09
Abstract
No abstract record available.
Inventors
- 👤 Karl Farkas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:52
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/045
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) | 1914-11-13 | 1915-05-15 | 1915-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-11-13 | 1919-05-15 | 1919-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-11-13 | 1923-05-15 | 1923-11-14 | $7700.00 | Window Closed / Lapsed |