US2225159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid resisting glass flux
Assignee: EIDP Inc
•
Filing: 1937-03-17
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Granted: 1940-12-17
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Expires: 1957-03-17
Abstract
No abstract record available.
Inventors
- 👤 Alden J Deyrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:58
CPC Classifications
C; C03; C03C; C03C10/00; C03C10/16; C03C10/0054; C03C17/00; C03C17/02; C03C3/00; C03C3/04; C03C3/062; C03C3/07; C03C3/072
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) | 1943-12-17 | 1944-06-17 | 1944-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-17 | 1948-06-17 | 1948-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-17 | 1952-06-17 | 1952-12-17 | $7700.00 | Window Closed / Lapsed |