Patent US1368109A successfully refreshed from Google Patents.
US1368109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete wall construction
Assignee: Individual
•
Filing: 1919-11-01
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Granted: 1921-02-08
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Expires: 1939-11-01
Abstract
No abstract record available.
Inventors
- 👤 Buckhout William Cornell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:18
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/70; E04B1/7069
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) | 1924-02-08 | 1924-08-09 | 1925-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-02-08 | 1928-08-09 | 1929-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-02-08 | 1932-08-09 | 1933-02-08 | $7700.00 | Window Closed / Lapsed |