Patent US2644691A successfully refreshed from Google Patents.
US2644691A
Expired / Lapsed
US
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Roller device for moving loads
Assignee: Individual
•
Filing: 1951-04-24
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Granted: 1953-07-07
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Expires: 1971-04-24
Abstract
No abstract record available.
Inventors
- 👤 Herman R Pohle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:17
CPC Classifications
F; F16; F16C; F16C29/00; F16C29/04; F16C29/06; F16C29/0614; F16C29/0616; F16C29/0619; B; B62; B62B; B62B5/00; B62B5/0083; F16C33/00; F16C33/30; F16C33/46; F16C33/50; B62B2301/00; B62B2301/25; B62B2301/254; B62B2301/256
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |