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US2831664A
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Glass stirring
Assignee: Corning Glass Works
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Filing: 1953-10-30
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Granted: 1958-04-22
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Expires: 1973-10-30
Abstract
No abstract record available.
Inventors
- 👤 Paul F Spremulli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:39
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/18; C03B5/187; C03B5/1875
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US216053A
Cited
US1768956A
Cited
US1949696A
Cited
US2459636A
Cited
US2569459A
Cited
US2570078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |