US821355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary kiln.
Assignee: Individual
•
Filing: 1904-05-18
•
Granted: 1906-05-22
•
Expires: 1924-05-18
Abstract
No abstract record available.
Inventors
- 👤 Oscar Gerlach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:31
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/14; F27B9/20; F27B9/22; F27D; F27D99/00; F27D99/0073; F27D99/0075
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) | 1909-05-21 | 1909-11-20 | 1910-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-05-21 | 1913-11-20 | 1914-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-05-21 | 1917-11-20 | 1918-05-22 | $7700.00 | Window Closed / Lapsed |