Patent US1613448A successfully refreshed from Google Patents.
US1613448A
Expired / Lapsed
US
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Siliceous composition of matter
Assignee: CELITE Co
•
Filing: 1925-12-19
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Granted: 1927-01-04
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Expires: 1945-12-19
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Endres
- 👤 Caldwell Lyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:00
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20
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) | 1930-01-03 | 1930-07-05 | 1931-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-01-03 | 1934-07-05 | 1935-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-01-03 | 1938-07-05 | 1939-01-04 | $7700.00 | Window Closed / Lapsed |