US3228822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular core partition panel
Assignee: United States Gypsum Co
•
Filing: 1961-04-24
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Granted: 1966-01-11
•
Expires: 1981-04-24
Abstract
No abstract record available.
Inventors
- 👤 Norman Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:55
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/239; Y10T428/24; Y10T428/24744; Y10T428/24752; Y10T428/24769
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PREFABRICATED CONSTRUCTION PANEL COMPRISING TWO PARALLEL SPACED FACE SHEETS, A CORE UNIT DISPOSED BETWEEIN SAID SHEETS COMPRISED OF A PLURALITY OF NEARLY CYLINDRICAL RESILIENT TUBULAR MEMBERS, SAID MEMBERS HAVING THEIR LONGITUDINAL AXES PARALLEL TO THE PLANES OF THE FACE SHEETS, EACH OF SAID MEMBERS HAVING AT LEAST TWO ELONGATED FLATTENED PORTIONS EXTENDING SUBSTANTIALLY UNIFORMLY ALONG
Claim 2
Dependent Claim
56 words
A PREFABRICATED CONSTRUCTION PANEL COMPRISING TWO PARALLEL SPACED FACE SHEETS, A CORE UNIT DISPOSED BETWEEIN SAID SHEETS COMPRISED OF A PLURALITY OF NEARLY CYLINDRICAL RESILIENT TUBULAR MEMBERS, SAID MEMBERS HAVING THEIR LONGITUDINAL AXES PARALLEL TO THE PLANES OF THE FACE SHEETS, EACH OF SAID MEMBERS HAVING AT LEAST TWO ELONGATED FLATTENED PORTIONS EXTENDING SUBSTANTIALLY UNIFORMLY ALONG
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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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |