US3255026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phototropic glass composition
Assignee: Corning Glass Works
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Filing: 1962-10-22
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Granted: 1966-06-07
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Expires: 1982-10-22
Abstract
No abstract record available.
Inventors
- 👤 Jackson S Stroud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:51
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C4/00; C03C4/04; C03C4/06; C03C4/065
Claims Analysis
Total Claims: 0
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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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |