US2546356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall structure of building blocks
Assignee: Individual
•
Filing: 1948-04-21
•
Granted: 1951-03-27
•
Expires: 1968-04-21
Abstract
No abstract record available.
Inventors
- 👤 John B Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:22
CPC Classifications
E; E04; E04C; E04C1/00; E04C1/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US106749A
Cited
US180794A
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US416428A
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US703760A
Cited
US773404A
Cited
US891495A
Cited
US1953287A
Cited
US1898864A
Cited
US2141000A
Cited
US2346170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |