US2431571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Man's brief
Assignee: Individual
•
Filing: 1945-08-18
•
Granted: 1947-11-25
•
Expires: 1965-08-18
Abstract
No abstract record available.
Inventors
- 👤 Lehr Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:17
CPC Classifications
A; A41; A41B; A41B9/00; A41B9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1740973A
Cited
US2054310A
Cited
US2088800A
Cited
US2060689A
Cited
USRE21092E
Cited
US2335658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |