US2587321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for forming and finishing concrete surfaces
Assignee: Individual
•
Filing: 1947-05-26
•
Granted: 1952-02-26
•
Expires: 1967-05-26
Abstract
No abstract record available.
Inventors
- 👤 John H Hohnke
- 👤 Carl R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:28
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/22; E01C19/23; E01C19/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1392161A
Cited
US1550027A
Cited
US1533464A
Cited
US1874957A
Cited
US2084068A
Cited
US2187080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |