Patent US2613261A successfully refreshed from Google Patents.
Patent US1503358A successfully refreshed from Google Patents.
US1503358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete mold
Assignee: Individual
•
Filing: 1922-12-09
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Granted: 1924-07-29
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Expires: 1942-12-09
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:39
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/76
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) | 1927-07-29 | 1928-01-28 | 1928-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-07-29 | 1932-01-28 | 1932-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-07-29 | 1936-01-28 | 1936-07-29 | $7700.00 | Window Closed / Lapsed |