Patent US4637587A successfully refreshed from Google Patents.
US2007676A
Expired / Lapsed
US
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Apparatus for burning calcareous materials
Assignee: Individual
•
Filing: 1931-08-28
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Granted: 1935-07-09
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Expires: 1951-08-28
Abstract
No abstract record available.
Inventors
- 👤 Falla Fernando
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:43
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/22; F27B7/24; F27B7/36; F27B7/362; F27B7/14; F27B7/16; F27B7/167; F27B2007/168; F27B2007/367
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) | 1938-07-08 | 1939-01-07 | 1939-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-07-08 | 1943-01-07 | 1943-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-07-08 | 1947-01-07 | 1947-07-09 | $7700.00 | Window Closed / Lapsed |