US3591437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a plastic building wall fin unit
Assignee: Hospitality Homes
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Filing: 1968-07-01
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Granted: 1971-07-06
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Expires: 1988-07-01
Abstract
Abstract A PREFABRICATED PLASTIC BUILDING WALL FIN UNIT COMPRISING A GENERALLY U-SHAPED REINFORCED PLASTIC SHELL HAVING BRACKET MEANS FOR SECURING THE FIN UNIT TO A BUILDING WALL. FIREPROOFING MATERIAL MAY BE APPLIED TO THE INTERIOR SURFACE OF THE SHELL. A FORAMINOUS REINFORCEMENT MAY BE PARTIALLY EMBEDDED IN THE SHELL TO PROVIDE POSITIVE CONNECTION FOR THE FIREPROOFING MATERIAL AND TO PROVIDE STRUCTURAL REINFORCEMENT FOR THE SHELL.
Inventors
- 👤 Kenneth A Schafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:15
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/109; Y10T156/1092; Y10T156/1093; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |