US3450011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete finishing machine
Assignee: HAROLD W GODBERSEN
•
Filing: 1967-07-03
•
Granted: 1969-06-17
•
Expires: 1987-07-03
Abstract
No abstract record available.
Inventors
- 👤 Harold W Godbersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:35
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/22; E01C19/23; E01C19/29; E01C19/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1736413A
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US1874957A
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US2603132A
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US3221618A
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US3147678A
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US3270634A
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US3368466A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |