US2561095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal faced building block
Assignee: Individual
•
Filing: 1945-10-10
•
Granted: 1951-07-17
•
Expires: 1965-10-10
Abstract
No abstract record available.
Inventors
- 👤 Allan E Chester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:04
CPC Classifications
E; E04; E04C; E04C1/00; E04C1/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US597189A
Cited
US756622A
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US833455A
Cited
US1776116A
Cited
US1898864A
Cited
US1949079A
Cited
US2082241A
Cited
US2105245A
Cited
US2105895A
Cited
US2148847A
Cited
US2141946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |