Patent US3733237A successfully refreshed from Google Patents.
US3733237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making hermetically sealed glazing units
Assignee: PPG Industries Inc
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Filing: 1971-10-20
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Granted: 1973-05-15
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Expires: 1991-10-20
Abstract
Abstract Disclosed is an improved multiple glazed window unit and as improved method and apparatus for fabricating hermetically sealed glazing units comprised of a pair of spaced glass sheets separated at their marginal edges by a flexible spacer and surrounded about the perimeter by a deformable sealant covered with a flexible or non-rigid tape. In accordance with use of the preferred process and apparatus of this invention, the portions of the flexible cover tape and sealant overlying the spacer are longitudinally recessed or indented relative to lateral portions of the tape and sealant overlying the glass sheet edges.
Inventors
- 👤 B Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:48
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/66; E06B3/677; B; B29; B29C; B29C63/00; B29C63/0026; B29C63/0034; B29C63/0039; E06B3/673; E06B3/67326; E06B3/6733; E06B3/67365; E06B2003/67378; E06B3/67339; E06B3/67356
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |