Patent US2459685A successfully refreshed from Google Patents.
US2459685A
Expired / Lapsed
US
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Manufacture of structural shapes
Assignee: Johns Manville Corp
•
Filing: 1944-05-03
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Granted: 1949-01-18
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Expires: 1964-05-03
Abstract
No abstract record available.
Inventors
- 👤 Arthur B Cummins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:14
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/16; G; G09; G09F; G09F23/00; G09F2023/0025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE265296C
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US1049005A
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US1288834A
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DE334858C
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DE455115C
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DE642056C
Cited
US2203614A
Cited
US1945534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |