US2730766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plunger plugs for hypodermic cartridges and methods of and apparatus for making the same
Assignee: TOMPKINS RUBBER Co
•
Filing: 1951-03-08
•
Granted: 1956-01-17
•
Expires: 1971-03-08
Abstract
No abstract record available.
Inventors
- 👤 Ernest E Tompkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:23
CPC Classifications
B; B29; B29C; B29C33/00; Y; Y10; Y10S; Y10S425/00; Y10S425/806
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US447555A
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US587961A
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US1624224A
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US1687797A
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US1817287A
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US2063355A
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US2353674A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |