US1357290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing graphite articles
Assignee: REPUBLIC CARBON Co
•
Filing: 1919-12-18
•
Granted: 1920-11-02
•
Expires: 1939-12-18
Abstract
No abstract record available.
Inventors
- 👤 Kemmer Frank Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:28
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/528; C04B35/532; Y; Y10; Y10T; Y10T428/00; Y10T428/30
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) | 1923-11-02 | 1924-05-03 | 1924-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-11-02 | 1928-05-03 | 1928-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-11-02 | 1932-05-03 | 1932-11-02 | $7700.00 | Window Closed / Lapsed |