Patent US2442491A successfully refreshed from Google Patents.
US2442491A
Expired / Lapsed
US
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Railway wheel checking device
Assignee: Individual
•
Filing: 1945-03-05
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Granted: 1948-06-01
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Expires: 1965-03-05
Abstract
No abstract record available.
Inventors
- 👤 Marion W Gieskieng
- 👤 William A Gieskieng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:50
CPC Classifications
B; B61; B61L; B61L1/00; B61L1/16; B61L1/163; B61L1/165; B61K; B61K9/00; B61K9/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1701975A
Cited
US1702997A
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US1806093A
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US2045923A
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US2110591A
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US2227099A
Cited
US2231105A
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US2429266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-01 | 1951-12-01 | 1952-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-01 | 1955-12-01 | 1956-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-01 | 1959-12-01 | 1960-06-01 | $7700.00 | Window Closed / Lapsed |