Patent US2194784A successfully refreshed from Google Patents.
US2194784A
Expired / Lapsed
US
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Heat-absorbing glass
Assignee: Schott AG
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Filing: 1937-07-08
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Granted: 1940-03-26
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Expires: 1957-07-08
Abstract
No abstract record available.
Inventors
- 👤 Berger Edwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:58
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
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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) | 1943-03-26 | 1943-09-25 | 1944-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-03-26 | 1947-09-25 | 1948-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-03-26 | 1951-09-25 | 1952-03-26 | $7700.00 | Window Closed / Lapsed |