US3216812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for skimming and stirring molten glass
Assignee: OI Glass Inc
•
Filing: 1962-04-02
•
Granted: 1965-11-09
•
Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 William B Silverman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:49
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/18; C03B5/182; C03B5/187; C03B5/1875; C03B5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US246109A
Cited
US1927101A
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US1916668A
Cited
US2238800A
Cited
US3057175A
Cited
US2945325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |