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Patent US2197478A successfully refreshed from Google Patents.
US2197478A
Expired / Lapsed
US
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Collapsible ring
Assignee: Individual
•
Filing: 1939-09-05
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Granted: 1940-04-16
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Expires: 1959-09-05
Abstract
No abstract record available.
Inventors
- 👤 Mathieu Charles Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:33
CPC Classifications
A; A61; A61H; A61H33/00; A61H33/06; A61H35/00; A61H2035/004; A61H2201/00; A61H2201/01; A61H2201/0161; Y; Y10; Y10S; Y10S292/00; Y10S292/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-04-16 | 1943-10-16 | 1944-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-16 | 1947-10-16 | 1948-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-16 | 1951-10-16 | 1952-04-16 | $7700.00 | Window Closed / Lapsed |