US1081618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing billets of refractory materials.
Assignee: Westinghouse Lamp Co
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Filing: 1912-03-28
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Granted: 1913-12-16
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Expires: 1932-03-28
Abstract
No abstract record available.
Inventors
- 👤 Harry D Madden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:24
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/02; B22F3/04; Y; Y10; Y10S; Y10S264/00; Y10S264/50; Y10S425/00; Y10S425/044; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805
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) | 1916-12-15 | 1917-06-16 | 1917-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-12-15 | 1921-06-16 | 1921-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-12-15 | 1925-06-16 | 1925-12-16 | $7700.00 | Window Closed / Lapsed |