Patent US2085775A successfully refreshed from Google Patents.
US2085775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door for horizontal chamber ovens for the production of gas and coke
Assignee: Beazer East Inc
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Filing: 1935-09-23
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Granted: 1937-07-06
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Expires: 1955-09-23
Abstract
No abstract record available.
Inventors
- 👤 Paul Van Ackeren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:19
CPC Classifications
C; C10; C10B; C10B25/00; C10B25/02; C10B25/16
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) | 1940-07-05 | 1941-01-04 | 1941-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-05 | 1945-01-04 | 1945-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-05 | 1949-01-04 | 1949-07-06 | $7700.00 | Window Closed / Lapsed |