Patent US3300928A successfully refreshed from Google Patents.
US3300928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural building panels
Assignee: Kalwall Corp
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Filing: 1963-11-22
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Granted: 1967-01-31
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Expires: 1983-11-22
Abstract
No abstract record available.
Inventors
- 👤 Keller Robert Renker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:25
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/54; E04C2/543
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
45 words
THE COMBINATION OF A SANDWICH TYPE BUILDING WALL PANEL HAVING AT LEAST ONE EDGE PORTION EXPOSING THE INTERIOR OF THE PANEL AND INDEPENDENTLY REMOVABLE EDGE CAP MEANS COVERING SAID EDGE PORTION AND HELD IN ABUTTING, WEATHER-SEALING RELATIONSHIP TO SAID PANEL WITH A POLYVINYL FLUORIDE TAPE.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |