US1961603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat absorbing glass
Assignee: Firm Jenaer Glaswerk Schott &
•
Filing: 1931-11-07
•
Granted: 1934-06-05
•
Expires: 1951-11-07
Abstract
No abstract record available.
Inventors
- 👤 Berger Edwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:51
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/16; C03C3/04; C03C3/062; C03C3/064; C03C3/14; C03C3/17; C03C3/19; C03C4/00; C03C4/08; C03C4/082
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1937-06-04 | 1937-12-04 | 1938-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-06-04 | 1941-12-04 | 1942-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-06-04 | 1945-12-04 | 1946-06-05 | $7700.00 | Window Closed / Lapsed |