Patent US2150100A successfully refreshed from Google Patents.
US3395884A
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Concrete curb form construction
Assignee: Mardel Investment Co
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Filing: 1965-09-15
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Granted: 1968-08-06
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Expires: 1985-09-15
Abstract
No abstract record available.
Inventors
- 👤 Delvin E Laukala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:30
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/50; E01C19/502; E01C19/506; E04; E04G; E04G17/00; E04G17/06; E04G2017/0646
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2611169A
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US2875500A
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US2907089A
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US3069743A
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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) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |