Patent US1913707A successfully refreshed from Google Patents.
US1913707A
Expired / Lapsed
US
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Concrete construction
Assignee: Individual
•
Filing: 1931-06-01
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Granted: 1933-06-13
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Expires: 1951-06-01
Abstract
No abstract record available.
Inventors
- 👤 Etheridge Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:25
CPC Classifications
E; E04; E04C; E04C5/00; E04C5/01; E04C5/012; C; C04; C04B; C04B20/00; C04B20/0008; Y; Y10; Y10S; Y10S52/00; Y10S52/07; Y10T; Y10T428/00; Y10T428/249921
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) | 1936-06-12 | 1936-12-12 | 1937-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-06-12 | 1940-12-12 | 1941-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-06-12 | 1944-12-12 | 1945-06-13 | $7700.00 | Window Closed / Lapsed |