Patent US2007349A successfully refreshed from Google Patents.
US2007349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of manufacturing lead glass
Assignee: Evonik Operations GmbH
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Filing: 1932-09-09
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Granted: 1935-07-09
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Expires: 1952-09-09
Abstract
No abstract record available.
Inventors
- 👤 Schertel Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:01
CPC Classifications
C; C03; C03C; C03C1/00; C03C1/02; C03C1/028; A; A47; A47L; A47L11/00; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/162; C03C1/026
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) | 1938-07-08 | 1939-01-07 | 1939-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-07-08 | 1943-01-07 | 1943-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-07-08 | 1947-01-07 | 1947-07-09 | $7700.00 | Window Closed / Lapsed |