Patent US2846819A successfully refreshed from Google Patents.
US2846819A
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Apparatus for manufacturing toughened bent glass
Assignee: Pilkington Group Ltd
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Filing: 1953-09-15
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Granted: 1958-08-12
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Expires: 1973-09-15
Abstract
No abstract record available.
Inventors
- 👤 Henry W Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:25
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/03; C03B23/031; C03B35/00; C03B35/14; C03B35/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE115961C
Cited
US952052A
Cited
US1258892A
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US1280991A
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US1787460A
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US2251159A
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US2372418A
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GB568088A
Cited
US2431353A
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US2446824A
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US2518918A
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US2456675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |