US2979865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing color-controlled vitreous materials
Assignee: OI Glass Inc
•
Filing: 1958-02-27
•
Granted: 1961-04-18
•
Expires: 1978-02-27
Abstract
No abstract record available.
Inventors
- 👤 Robert R Rough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:26
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/02; C03B; C03B5/00; C03B5/16; C03B5/173; C03C14/00; C03C14/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US576312A
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US1874799A
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US1834631A
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US2115408A
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US2294373A
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GB667474A
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US2593197A
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US2819891A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |