Patent US2873489A successfully refreshed from Google Patents.
US2873489A
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Means for producing flint rods
Assignee: NEW PROCESS METALS Inc
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Filing: 1955-10-26
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Granted: 1959-02-17
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Expires: 1975-10-26
Abstract
No abstract record available.
Inventors
- 👤 Isidor S Hirschhorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:39
CPC Classifications
B; B23; B23D; B23D21/00; B23D21/02; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5191
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1301331A
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US1749939A
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US1704635A
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US1701863A
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US1929915A
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US2062486A
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US2493143A
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US2505426A
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US2636408A
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US2699584A
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US2692421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |