Patent US1149064A successfully refreshed from Google Patents.
US1149064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric-furnace abrasive and method of making the same.
Assignee: Exolon Co
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Filing: 1915-06-11
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Granted: 1915-08-03
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Expires: 1935-06-11
Abstract
No abstract record available.
Inventors
- 👤 Herbert T Kalmus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:16
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/10; C04B35/111; C04B35/1115
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) | 1918-08-02 | 1919-02-01 | 1919-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-08-02 | 1923-02-01 | 1923-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-08-02 | 1927-02-01 | 1927-08-03 | $7700.00 | Window Closed / Lapsed |