Patent US2019526A successfully refreshed from Google Patents.
US2019526A
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US
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Balanced door
Assignee: Ellison Bronze Co Inc
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Filing: 1931-04-27
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Granted: 1935-11-05
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Expires: 1951-04-27
Abstract
No abstract record available.
Inventors
- 👤 Edward H Ellison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:32
CPC Classifications
E; E05; E05D; E05D13/00; E05D13/04; E05D15/00; E05D15/28; E05D15/30; E05F; E05F3/00; E05F3/04; E05F3/10; E05F3/102; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
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) | 1938-11-04 | 1939-05-06 | 1939-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-04 | 1943-05-06 | 1943-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-04 | 1947-05-06 | 1947-11-05 | $7700.00 | Window Closed / Lapsed |