US3595726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof light panel
Assignee: ARTHUR H MIDDLETON
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Filing: 1969-08-21
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Granted: 1971-07-27
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Expires: 1989-08-21
Abstract
Abstract A ROOF LIGHT PANEL IS MADE UP OF A TROUGH-LIKE ALUMINUM SHEET HAVING UPSTANDING LONGITUDINAL EDGES ADPATED TO INTERLOCK WITH SIMILAR ADJACENT SHEETS. THE BOTTOM OF THE PANEL IS PERFORATED. A SHEET OF TRANSULCENT FIBER GLASS REINFORCING MATERIAL OVERLIES THE PERFORATIONS. A NORMALLY HARD, TRANSLUCENT, SEALING MATERIAL ENVELOPS THE REIN- FORCING MATERIAL AND SEALS THE REINFORCING MATERIAL TO THE METAL SHEET. THE SEALING MATERIAL ALSO INTERNENGAGES THE MARGINS OF THE PERFORATIONS.
Inventors
- 👤 Arthur H Middleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:08
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/03; B; B32; B32B; B32B37/00; E04D3/00; E04D3/24; E04D3/28; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |