Patent US2485995A successfully refreshed from Google Patents.
US2485995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inner cover for hood-type furnaces
Assignee: Individual
•
Filing: 1946-11-22
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Granted: 1949-10-25
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Expires: 1966-11-22
Abstract
No abstract record available.
Inventors
- 👤 Harry H Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:27
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/663; C21D9/673
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1622494A
Cited
US1940948A
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US1825790A
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US1794151A
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US1923145A
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US2168028A
Cited
US2325677A
Cited
US2276971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-24 | 1953-04-25 | 1953-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-24 | 1957-04-25 | 1957-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-24 | 1961-04-25 | 1961-10-25 | $7700.00 | Window Closed / Lapsed |