Patent US2452778A successfully refreshed from Google Patents.
US2452778A
Expired / Lapsed
US
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Universal swivel
Assignee: Individual
•
Filing: 1944-03-06
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Granted: 1948-11-02
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Expires: 1964-03-06
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Mathewson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:24
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/22; B66C1/34; F; F16; F16G; F16G15/00; F16G15/08; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631; Y10T403/32672
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US381043A
Cited
US1454587A
Cited
US1701683A
Cited
US1910926A
Cited
US2037786A
Cited
US2110561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-02 | 1952-05-03 | 1952-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-02 | 1956-05-03 | 1956-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-02 | 1960-05-03 | 1960-11-02 | $7700.00 | Window Closed / Lapsed |