Patent US2438149A successfully refreshed from Google Patents.
US2438149A
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Stopper
Assignee: Bayer Corp
•
Filing: 1945-12-18
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Granted: 1948-03-23
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Expires: 1965-12-18
Abstract
No abstract record available.
Inventors
- 👤 Fred A Cutter
- 👤 William F Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:56
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/002; A; A61; A61J; A61J1/00; A61J1/14; A61J1/1406; A61J1/1475; A61J1/1487; Y; Y10; Y10S; Y10S215/00; Y10S215/03
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) | 1951-03-23 | 1951-09-22 | 1952-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-23 | 1955-09-22 | 1956-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-23 | 1959-09-22 | 1960-03-23 | $7700.00 | Window Closed / Lapsed |