US2766488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inter-locking wall construction
Assignee: JOSEPH H BLUECHEL
•
Filing: 1952-05-20
•
Granted: 1956-10-16
•
Expires: 1972-05-20
Abstract
No abstract record available.
Inventors
- 👤 Gustav J Danielson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:13
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/38; E04B1/61; E04B1/6108; E04B1/612; E04B1/6179
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US205832A
Cited
US333903A
Cited
GB190603782A
Cited
US854656A
Cited
US911217A
Cited
AT86578B
Cited
US2414060A
Cited
US2703912A
Cited
US2664740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |