Patent US2536192A successfully refreshed from Google Patents.
US2536192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing cellular glass slabs
Assignee: Corning Glass Works
•
Filing: 1945-06-19
•
Granted: 1951-01-02
•
Expires: 1965-06-19
Abstract
No abstract record available.
Inventors
- 👤 Jesse T Littleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:07
CPC Classifications
C; C03; C03B; C03B19/00; C03B19/08
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) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |