US2466601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for burning cement and like materials
Assignee: Individual
•
Filing: 1948-12-08
•
Granted: 1949-04-05
•
Expires: 1968-12-08
Abstract
No abstract record available.
Inventors
- 👤 Lellep Otto George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:22
CPC Classifications
C; C04; C04B; C04B7/00; C04B7/36; C04B7/43; C04B7/432; F; F27; F27B; F27B7/00; F27B7/20; F27B7/2016; F27B7/2066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1215636A
Cited
US1215637A
Cited
US1775313A
Cited
US1761016A
Cited
US2148052A
Cited
US2143905A
Cited
US2214345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-04 | 1952-10-04 | 1953-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-04 | 1956-10-04 | 1957-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-04 | 1960-10-04 | 1961-04-05 | $7700.00 | Window Closed / Lapsed |