Patent US2900699A successfully refreshed from Google Patents.
US2900699A
Expired / Lapsed
US
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Mold for molding concrete blocks presenting irregular surfaces
Assignee: Neyrpic SA
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Filing: 1954-07-08
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Granted: 1959-08-25
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Expires: 1974-07-08
Abstract
No abstract record available.
Inventors
- 👤 Danel Pierre Francois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:09
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/12; E02B3/129
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1117449A
Cited
US1130507A
Cited
US1116394A
Cited
FR490352A
Cited
US2681494A
Cited
US2704875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |