US2488296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work support
Assignee: LEE J DRENNAN Inc
•
Filing: 1946-06-03
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Granted: 1949-11-15
•
Expires: 1966-06-03
Abstract
No abstract record available.
Inventors
- 👤 Kraus Helm Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:52
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/0032; B23Q11/0035; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/50; B23Q1/54; B23Q1/545; B23Q1/5456
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US105507A
Cited
US504773A
Cited
DE329723C
Cited
US974253A
Cited
US1550651A
Cited
US1670253A
Cited
US2358844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |