Patent US2435971A successfully refreshed from Google Patents.
US2435971A
Expired / Lapsed
US
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Gem dop
Assignee: DIAMOND CRAFT OF AMERICA Inc
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Filing: 1944-10-23
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Granted: 1948-02-17
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Expires: 1964-10-23
Abstract
No abstract record available.
Inventors
- 👤 Ludel Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:14
CPC Classifications
B; B24; B24B; B24B9/00; B24B9/02; B24B9/06; B24B9/16; B24B9/161
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US249523A
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US342895A
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US455195A
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US659778A
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US975966A
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US969871A
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US1184496A
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US1326423A
Cited
US1530566A
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FR565043A
Cited
US1721161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-16 | 1951-08-18 | 1952-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-16 | 1955-08-18 | 1956-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-16 | 1959-08-18 | 1960-02-17 | $7700.00 | Window Closed / Lapsed |