US2133683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building covering
Assignee: BLACK SYSTEMS Inc
•
Filing: 1935-10-24
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Granted: 1938-10-18
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Expires: 1955-10-24
Abstract
No abstract record available.
Inventors
- 👤 Black Edward Roscoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:23
CPC Classifications
E; E04; E04D; E04D3/00; E04D3/38; E04D1/00; E04D1/30; E04D2001/304; E04D2001/305; E04D13/00; E04D13/04; E04D13/0404; E04D13/0445; E04D2013/045; E04D2013/0454
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) | 1941-10-17 | 1942-04-18 | 1942-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-10-17 | 1946-04-18 | 1946-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-10-17 | 1950-04-18 | 1950-10-18 | $7700.00 | Window Closed / Lapsed |