Patent US2874791A successfully refreshed from Google Patents.
US2874791A
Expired / Lapsed
US
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Mobile display unit having elevatable drive devices
Assignee: Individual
•
Filing: 1955-04-01
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Granted: 1959-02-24
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Expires: 1975-04-01
Abstract
No abstract record available.
Inventors
- 👤 Robert E Mellencamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:49
CPC Classifications
B; B62; B62B; B62B5/00; B62B5/0026; B62B2202/00; B62B2202/30; B62B2202/34; B62B2203/00; B62B2203/10; B62B2301/00; B62B2301/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1512755A
Cited
US2254104A
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Cited
US2749996A
Cited
US2768697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |