Patent US3470012A successfully refreshed from Google Patents.
US3470012A
Expired / Lapsed
US
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Method and apparatus for producing decorative stone
Assignee: ROBERT C ROLLETTE
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Filing: 1965-03-08
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Granted: 1969-09-30
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Expires: 1985-03-08
Abstract
No abstract record available.
Inventors
- 👤 Robert C Rollette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:47
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/10; C04B20/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2152438A
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US2259879A
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US2491487A
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US2724659A
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US2776914A
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US2934455A
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US2927045A
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US3099574A
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US3285223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |