US2670871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure for containers
Assignee: NAT DAIRY RES LAB Inc
•
Filing: 1950-04-05
•
Granted: 1954-03-02
•
Expires: 1970-04-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Newton E Spiess
- 👤 Lawrence C Widdoes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:22
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/002; B65D39/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1014450A
Cited
US1188998A
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US1697814A
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US2224296A
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US2157512A
Cited
US2317545A
Cited
US2301724A
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US2316607A
Cited
US2546672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |