Patent US1127578A successfully refreshed from Google Patents.
US1127578A
Expired / Lapsed
US
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Arc-lamp electrode.
Assignee: National Carbon Co Inc
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Filing: 1913-05-22
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Granted: 1915-02-09
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Expires: 1933-05-22
Abstract
No abstract record available.
Inventors
- 👤 Allen T Baldwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:35
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/013; H; H05; H05B; H05B7/00; H05B7/02; H05B7/06; H05B7/08; H05B7/085
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) | 1918-02-08 | 1918-08-10 | 1919-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-02-08 | 1922-08-10 | 1923-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-02-08 | 1926-08-10 | 1927-02-09 | $7700.00 | Window Closed / Lapsed |