US2590588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structure
Assignee: Individual
•
Filing: 1946-09-07
•
Granted: 1952-03-25
•
Expires: 1966-09-07
Abstract
No abstract record available.
Inventors
- 👤 David A Wallace
- 👤 Wallace Paul Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:34
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/32; E04B1/3205; E04B2001/3235; E04B2001/3241; E04B2001/3252
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2427937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |