US3461716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak detector for paper cups
Assignee: Continental Can Co Inc
•
Filing: 1967-08-28
•
Granted: 1969-08-19
•
Expires: 1987-08-28
Abstract
No abstract record available.
Inventors
- 👤 William W Thomson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:08
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/34; B07C5/3404; G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/32; G01M3/34; Y; Y10; Y10S; Y10S209/00; Y10S209/912
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US522107A
Cited
US700891A
Cited
US2309231A
Cited
US2352916A
Cited
SU117156A1
Cited
US3382973A
Cited
FR1487835A
Cited
US3385433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |