US2889639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic hollow clog
Assignee: Individual
•
Filing: 1957-09-10
•
Granted: 1959-06-09
•
Expires: 1977-09-10
Abstract
No abstract record available.
Inventors
- 👤 Ruth L Rudine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:13
CPC Classifications
A; A43; A43B; A43B3/00; A43B13/00; A43B13/02; A43B13/04; Y; Y10; Y10S; Y10S36/00; Y10S36/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1347061A
Cited
US1387952A
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US1823445A
Cited
FR858099A
Cited
US2381389A
Cited
US2395767A
Cited
US2402227A
Cited
US2651117A
Cited
US2759284A
Cited
US2755567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |