US2300408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flood cover
Assignee: Individual
•
Filing: 1940-11-20
•
Granted: 1942-11-03
•
Expires: 1960-11-20
Abstract
No abstract record available.
Inventors
- 👤 Charles H Deerwester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:38
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/08; E; E04; E04H; E04H15/00; E04H15/20; F; F16; F16P; F16P1/00; F16P1/02
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) | 1945-11-02 | 1946-05-04 | 1946-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-11-02 | 1950-05-04 | 1950-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-11-02 | 1954-05-04 | 1954-11-03 | $7700.00 | Window Closed / Lapsed |