US2753271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vitreous enamels and enameling processes
Assignee: AT&T Inc
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Filing: 1952-08-01
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Granted: 1956-07-03
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Expires: 1972-08-01
Abstract
No abstract record available.
Inventors
- 👤 Arnold W Treptow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:52
CPC Classifications
C; C03; C03C; C03C4/00; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/076; C03C3/089; C03C3/091; C03C8/00; C03C8/14; C03C8/16; C23; C23D; C23D5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A VITREOUS ENAMEL FRIT HAVING THE FOLLOWING COMPOSITION, IN TERMS OF OXIDES:
Claim 2
Dependent Claim
12 words
A VITREOUS ENAMEL FRIT HAVING THE FOLLOWING COMPOSITION, IN TERMS OF OXIDES:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |