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Patent US2239732A successfully refreshed from Google Patents.
US2239732A
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Assignee: CHARLES H ANGELL
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Filing: 1937-02-24
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Granted: 1941-04-29
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Expires: 1957-02-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Newhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:29
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/04; A47C1/06; A47C7/00; A47C7/36; A47C7/40; A47C7/402
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) | 1944-04-28 | 1944-10-28 | 1945-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-28 | 1948-10-28 | 1949-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-28 | 1952-10-28 | 1953-04-29 | $7700.00 | Window Closed / Lapsed |