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US1820764A
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US
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Skylight
Assignee: WILLIAM PADDOR
•
Filing: 1929-08-03
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Granted: 1931-08-25
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Expires: 1949-08-03
Abstract
No abstract record available.
Inventors
- 👤 Abt Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:23
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/70; E05F15/71; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/148; E05Y2900/152; E05Y2900/154
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) | 1934-08-24 | 1935-02-23 | 1935-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-08-24 | 1939-02-23 | 1939-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-08-24 | 1943-02-23 | 1943-08-25 | $7700.00 | Window Closed / Lapsed |