US2700812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal wool method
Assignee: Individual
•
Filing: 1946-09-18
•
Granted: 1955-02-01
•
Expires: 1966-09-18
Abstract
No abstract record available.
Inventors
- 👤 Field Crosby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:38
CPC Classifications
B; B23; B23P; B23P17/00; B23P17/04; B23P17/06; Y; Y10; Y10T; Y10T29/00; Y10T29/14; Y10T29/142; Y10T29/143; Y10T29/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US573728A
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US1306880A
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US1419473A
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US627722A
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US662392A
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US1253353A
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US1419472A
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US1699302A
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US2365959A
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US2228477A
Cited
US2318320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |