US1567031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating hygroscopic materials
Assignee: Carrier Engineering Corp
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Filing: 1921-12-30
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Granted: 1925-12-29
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Expires: 1941-12-30
Abstract
No abstract record available.
Inventors
- 👤 Buensod Alfred Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:21
CPC Classifications
F; F26; F26B; F26B21/00; F26B21/30; F26B17/00; F26B17/02; F26B17/04; F26B25/00; F26B25/008; F26B2200/00; F26B2200/22
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) | 1928-12-28 | 1929-06-29 | 1929-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-12-28 | 1933-06-29 | 1933-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-12-28 | 1937-06-29 | 1937-12-29 | $7700.00 | Window Closed / Lapsed |