US2449710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete spreading apparatus
Assignee: Chain Belt Co
•
Filing: 1945-03-15
•
Granted: 1948-09-21
•
Expires: 1965-03-15
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Miller
- 👤 George K Viall
- 👤 Rudolph F Lindow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:42
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/18; E01C19/187
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1467243A
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US1565657A
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US1533464A
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US1579443A
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US1946972A
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US1832951A
Cited
US2373828A
Cited
US2361377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-21 | 1952-03-22 | 1952-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-21 | 1956-03-22 | 1956-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-21 | 1960-03-22 | 1960-09-21 | $7700.00 | Window Closed / Lapsed |