US3202068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slab finishing and curb building machine
Assignee: Curbmaster of America Inc
•
Filing: 1962-12-21
•
Granted: 1965-08-24
•
Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Burnham L Larsen
- 👤 Bernard J Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:05
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4866; E01C19/4886
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US544235A
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US2204021A
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US2252188A
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US2587321A
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US2623446A
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US2847916A
Cited
US2832773A
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US2881683A
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US2864290A
Cited
US3008388A
Cited
US3015257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |