Patent US2875556A successfully refreshed from Google Patents.
US2875556A
Expired / Lapsed
US
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Apparatus for molding refractory materials
Assignee: PER VIG Corp
•
Filing: 1953-07-31
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Granted: 1959-03-03
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Expires: 1973-07-31
Abstract
No abstract record available.
Inventors
- 👤 Vigna Cesare Luigi
- 👤 Perkins Narisara Edward
- 👤 Leygonie Pierre Henri Raoul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:25
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/32; C04B33/323; B; B28; B28B; B28B1/00; B28B1/24; B28B1/54; Y; Y10; Y10S; Y10S65/00; Y10S65/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1555258A
Cited
US1612628A
Cited
US1572873A
Cited
US1997263A
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US2048319A
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US2151874A
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US2317597A
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US2412925A
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US2436999A
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US2423915A
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US2475810A
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US2471437A
Cited
US2595502A
Cited
US2667722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |