Patent US2460938A successfully refreshed from Google Patents.
US2460938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cleaning asbestos
Assignee: Johns Manville Corp
•
Filing: 1944-08-05
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Granted: 1949-02-08
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Expires: 1964-08-05
Abstract
No abstract record available.
Inventors
- 👤 Frank J Koehne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:40
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/02; D02G3/16; D02G3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1484208A
Cited
US505977A
Cited
US2026833A
Cited
US1023750A
Cited
US1505742A
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US1509915A
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US1675941A
Cited
US1595257A
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US1595258A
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US2039692A
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US2152114A
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US1978802A
Cited
US2032827A
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US2128166A
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US2125086A
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US2128194A
Cited
US2214658A
Cited
US2280903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-08 | 1952-08-09 | 1953-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-08 | 1956-08-09 | 1957-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-08 | 1960-08-09 | 1961-02-08 | $7700.00 | Window Closed / Lapsed |