US3605356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated plastic window sill
Assignee: CRANE PLASTICS Inc
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Filing: 1970-04-06
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Granted: 1971-09-20
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Expires: 1990-04-06
Abstract
Abstract A PREFABRICATED WINDOW SILL OF PLURAL DENSITY, SYNTHETIC RESIN COMPOSITION HAVING A MAIN BODY PORTION OR CORE FORMED FROM A LIGHTWEIGHT, EXPANDED, CELLULAR PLASTIC MATERIAL AND A RELATIVELY THIN, EXTERIOR SKIN OR CLAD COMPOSED OF A DENSER, RIGID, WEATHER-RESISTANT PLASTIC MATERIAL. THE WINDOW SILL IS SIZED AND FINISHED FOR INSTALLATION IN STANDARD SIZES OF WINDOW OPENINGS WITHOUT REQUIRING CUTTING OR OTHER SHAPING THEREOF.
Inventors
- 👤 Paul G Bordner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:40
CPC Classifications
E; E06; E06B; E06B1/00; E06B1/70; E06B1/702
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |