US2656942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable gear for portable freight units
Assignee: Individual
•
Filing: 1950-10-02
•
Granted: 1953-10-27
•
Expires: 1970-10-02
Abstract
No abstract record available.
Inventors
- 👤 George V Helms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:45
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/12; B65D90/18; B65D90/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1049210A
Cited
US1303854A
Cited
US1615532A
Cited
US1952015A
Cited
GB518073A
Cited
US2280185A
Cited
US2412158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |