Patent US2687599A successfully refreshed from Google Patents.
US2687599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for melting glass
Assignee: Owens Corning
•
Filing: 1950-11-17
•
Granted: 1954-08-31
•
Expires: 1970-11-17
Abstract
No abstract record available.
Inventors
- 👤 Fletcher Ed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:15
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/08; C03B37/085; C03B37/081
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |