US3110370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curtain wall material
Assignee: Individual
•
Filing: 1959-06-04
•
Granted: 1963-11-12
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Expires: 1979-06-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles A Wulf
- 👤 Chester M Hunt
- 👤 Jr John P Lofberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:46
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; E04B; E04B2/00; E04B2/88; E04B2/90; E04B2/92
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
174 words
CURTAIN WALL MATERIAL COMPRISING A FIRST PANEL HAVING A CENTRAL PORTION AND A FLANGE EXTENDING AROUND THE EDGE OF SAID CENTRAL PORTION, A SECOND PANEL HAVING A CENTRAL PORTION SMALLER THAN THE CENTRAL PORTION OF SAID FIRST PANEL AND HAVING A FLANGE EXTENDING AROUND THE EDGE OF THE CENTRAL PORTION OF SAID SECOND PANEL, SAID FLANGE OF SAID; SECOND PANEL BEING NESTED WITHIN THE FLANGE OF SAID FIRST PANEL WITH THE CONCAVE PORTION OF SAID SECOND PANEL FACING SAID FIRST PANEL WHEREBY A CHAMBER IS FORMED BETWEEN SAID FIRST AND SECOND PANELS, A PLURALITY OF SPACERS FORMED OF INSULATING MATERIAL AND RECEIVED BETWEEN SAID PANELS AT SPACED INTERVALS ALONG THE INTERSECTION OF THE CENTRAL PORTION AND THE FLANGE OF SAID FIRST PANEL AND SPACING THE FLANGE OF SAID SECOND PANEL FROM THE FLANGE AND CENTRAL PORTION OF SAID FIRST PANEL, AND A BEAD OF CAULKING MATERIAL EXTENDING BETWEEN THE FLANGES OF SAID PANELS SECURING SAID PANELS TOGETHER IN A SPACED RELATIONSHIP, SAID BEAD OF CAULKING MATERIAL BEING THE ONLY MEANS HOLDING SAID PANELS TOGETHER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-11 | 1967-05-13 | 1967-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-11 | 1971-05-13 | 1971-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-11 | 1975-05-13 | 1975-11-12 | $7700.00 | Window Closed / Lapsed |