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US1459984A
Expired / Lapsed
US
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Furnace-charging apparatus
Assignee: William B Pollock Co
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Filing: 1920-12-04
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Granted: 1923-06-26
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Expires: 1940-12-04
Abstract
No abstract record available.
Inventors
- 👤 Alfred C Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:01
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/18; Y; Y10; Y10S; Y10S254/00; Y10S254/15
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) | 1926-06-25 | 1926-12-25 | 1927-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-06-25 | 1930-12-25 | 1931-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-06-25 | 1934-12-25 | 1935-06-26 | $7700.00 | Window Closed / Lapsed |