USRE25564E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightweight structural unit
Assignee: —
•
Filing: —
•
Granted: 1964-04-28
•
Expires: 1981-04-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:35
CPC Classifications
C; C03; C03B; C03B19/00; C03B19/06; C04; C04B; C04B38/00; C04B38/0038; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/266
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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |