US2998500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Smith Kline & French Laboratories Ltd
•
Filing: 1958-08-11
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Granted: 1961-08-29
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Expires: 1978-08-11
Abstract
No abstract record available.
Inventors
- 👤 Carlo Mario J Di
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:45
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/34; B66B1/3469; H; H02; H02B; H02B1/00; H02B1/015; H02B1/06; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20238; Y10T74/20244
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |