US2669806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeder for molten glass
Assignee: Individual
•
Filing: 1951-12-08
•
Granted: 1954-02-23
•
Expires: 1971-12-08
Abstract
No abstract record available.
Inventors
- 👤 Walle Edmond Van De
- 👤 Walle Charles Van De
- 👤 Bonnefoy Emile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:33
CPC Classifications
C; C03; C03B; C03B9/00; C03B9/13; C03B9/193; C03B9/1932; C03B9/1936; C03B7/00; C03B7/14; C03B9/195
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1415824A
Cited
US1260637A
Cited
US1271961A
Cited
US1845491A
Cited
US1845525A
Cited
US2405557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |