Patent US2534023A successfully refreshed from Google Patents.
US2534023A
Expired / Lapsed
US
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Centric relator
Assignee: Individual
•
Filing: 1949-09-23
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Granted: 1950-12-12
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Expires: 1969-09-23
Abstract
No abstract record available.
Inventors
- 👤 Sidney H Hirschhorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:01
CPC Classifications
A; A61; A61C; A61C11/00; A61C11/02; A61C11/003; A61C11/08; A61C11/081; A61C11/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |