US2235647A
Expired / Lapsed
US
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Portable platform
Assignee: Steel Plate & Shape Corp
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Filing: 1939-01-30
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Granted: 1941-03-18
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Expires: 1959-01-30
Abstract
No abstract record available.
Inventors
- 👤 George D Shanahan
- 👤 Clyde C Huffman
- 👤 Elvert R Warnke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:28
CPC Classifications
B; B65; B65D; B65D19/00; B65D19/02; B65D19/06; B65D19/08; B65D2519/00; B65D2519/00004; B65D2519/00009; B65D2519/00014; B65D2519/00024; B65D2519/00049; B65D2519/00059; B65D2519/00154; B65D2519/00164; B65D2519/00223; B65D2519/00233; B65D2519/00258; B65D2519/00283; B65D2519/00288; B65D2519/00313; B65D2519/00328; B65D2519/00333; B65D2519/00398; B65D2519/00402; B65D2519/00422; B65D2519/00492; B65D2519/00497; B65D2519/00547; B65D2519/00552; B65D2519/00557; B65D2519/00562; B65D2519/00577; B65D2519/00616; B65D2519/00626; B65D2519/00636; B65D2519/00666
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-03-17 | 1944-09-16 | 1945-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-17 | 1948-09-16 | 1949-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-17 | 1952-09-16 | 1953-03-18 | $7700.00 | Window Closed / Lapsed |