Patent US2747565A successfully refreshed from Google Patents.
US2747565A
Expired / Lapsed
US
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Continuous feed stone working machine
Assignee: INGALLS STONE CO
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Filing: 1954-12-17
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Granted: 1956-05-29
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Expires: 1974-12-17
Abstract
No abstract record available.
Inventors
- 👤 Claude B Henderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:05
CPC Classifications
B; B28; B28D; B28D7/00; B28D7/04; B23; B23D; B23D59/00; B23D59/02; B28D1/00; B28D1/02; B28D1/04; B28D1/043; B28D1/048
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1336563A
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US1525323A
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US1974553A
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US2170687A
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US2236078A
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US2403673A
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US2450371A
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US2467113A
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US2554079A
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US2636320A
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US2560843A
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US2587199A
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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) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |