Patent US2886339A successfully refreshed from Google Patents.
US2886339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible cargo carrying dolly
Assignee: Northrop Grumman Corp
•
Filing: 1957-05-13
•
Granted: 1959-05-12
•
Expires: 1977-05-13
Abstract
No abstract record available.
Inventors
- 👤 Robert F Buttles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:08
CPC Classifications
B; B60; B60F; B60F5/00; B60F5/003; B64; B64F; B64F5/00; B64F5/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US595150A
Cited
US1359032A
Cited
US1784240A
Cited
US2159672A
Cited
US2397317A
Cited
US2466149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |