Patent US2944833A successfully refreshed from Google Patents.
US2944833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tricycle frame
Assignee: AMF Inc
•
Filing: 1957-02-01
•
Granted: 1960-07-12
•
Expires: 1977-02-01
Abstract
No abstract record available.
Inventors
- 👤 Norman G Wintermantel
- 👤 Tennes L Erstad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:28
CPC Classifications
B; B62; B62K; B62K9/00; B62K9/02; G; G08; G08B; G08B5/00; G08B5/22; G08B5/36; G08B5/38
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1683872A
Cited
US1984916A
Cited
US1995529A
Cited
US2202479A
Cited
US2388712A
Cited
US2311941A
Cited
US2516705A
Cited
US2469944A
Cited
US2603701A
Cited
US2661406A
Cited
US2737554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |