US2720009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass seal
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1952-12-27
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Granted: 1955-10-11
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Expires: 1972-12-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Alfred Lippman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:26
CPC Classifications
A; A47; A47F; A47F3/00; A47F3/12; E; E06; E06B; E06B3/00; E06B3/66; E06B3/677
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN A MOISTURE PROOF SEALING STRUCTURE FOR A PORT OF A GLASS OBJECT, A WALL PORTION OF THE OBJECT DEFINING THE PORT, A FUSED INORGANIC SALT BODY HAVING A LOWER MELTING POINT THAN THE GLASS OF THE OBJECT ADHERED TO THE GLASS WALL DEFINING THE PORT, A FILM OF A MOSITURE IMPERMEABLE GLAZE COVERING THE OTHERWISE EXPOSED SURFACE OF SAID SALT, AND AN INSERT IN THE SALT BODY EXTENDING CROSSWISE OF THE PORT.
Claim 2
Dependent Claim
73 words
IN A MOISTURE PROOF SEALING STRUCTURE FOR A PORT OF A GLASS OBJECT, A WALL PORTION OF THE OBJECT DEFINING THE PORT, A FUSED INORGANIC SALT BODY HAVING A LOWER MELTING POINT THAN THE GLASS OF THE OBJECT ADHERED TO THE GLASS WALL DEFINING THE PORT, A FILM OF A MOSITURE IMPERMEABLE GLAZE COVERING THE OTHERWISE EXPOSED SURFACE OF SAID SALT, AND AN INSERT IN THE SALT BODY EXTENDING CROSSWISE OF THE PORT.
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) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |