Patent US2672979A successfully refreshed from Google Patents.
US2672979A
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US
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Assignee: Saint Gobain Abrasives Inc
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Filing: 1950-03-21
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Granted: 1954-03-23
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Expires: 1970-03-21
Abstract
No abstract record available.
Inventors
- 👤 Colin A Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:57
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US260113A
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US1790370A
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US662560A
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US829567A
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US1165612A
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US1256965A
Cited
US1478791A
Cited
US1511328A
Cited
US1697479A
Cited
GB326076A
Cited
GB368678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |