US2904859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing metal filaments
Assignee: Marvalaud Inc
•
Filing: 1956-02-16
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Granted: 1959-09-22
•
Expires: 1976-02-16
Abstract
No abstract record available.
Inventors
- 👤 Wade Worth
- 👤 Pond Robert Barrett
- 👤 Thomas P Gibbons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:42
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US809671A
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US950884A
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US1592140A
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US2062093A
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US2318244A
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FR904048A
Cited
US2752196A
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US2793395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |