US2800175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Firing tank furnaces
Assignee: Libbey Owens Ford Glass Co
•
Filing: 1949-06-11
•
Granted: 1957-07-23
•
Expires: 1969-06-11
Abstract
No abstract record available.
Inventors
- 👤 Donald E Sharp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:26
CPC Classifications
F; F23; F23L; F23L7/00; C; C03; C03B; C03B5/00; C03B5/16; C03B5/235; C03B5/2353; F23C; F23C9/00; F23C9/08; F23D; F23D99/00; F23D99/002; F23D99/004; F23D2206/00; F23D2206/0021; F23L2900/00; F23L2900/07001; Y; Y02; Y02E; Y02E20/00; Y02E20/32; Y02P; Y02P40/00; Y02P40/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |