US2491726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tray for use in refining towers
Assignee: GLITSCH ENGINEERING Co
•
Filing: 1944-05-15
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Granted: 1949-12-20
•
Expires: 1964-05-15
Abstract
No abstract record available.
Inventors
- 👤 Hans C Glitsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:52
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/32
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |