Patent US855477A successfully refreshed from Google Patents.
US855477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing calcium carbid.
Assignee: Union Carbide Corp
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Filing: 1905-11-14
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Granted: 1907-06-04
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Expires: 1925-11-14
Abstract
No abstract record available.
Inventors
- 👤 Edgar F Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:50
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/942
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) | 1910-06-03 | 1910-12-03 | 1911-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-06-03 | 1914-12-03 | 1915-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-06-03 | 1918-12-03 | 1919-06-04 | $7700.00 | Window Closed / Lapsed |