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US2975889A
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Assignee: KEM Manufacturing Co Inc
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Filing: 1959-03-27
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Granted: 1961-03-21
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Expires: 1979-03-27
Abstract
No abstract record available.
Inventors
- 👤 Dennis D Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:45
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/28; B65D75/30; B65D75/32; B65D75/36; B65D75/366; B65D2575/00; B65D2575/28; B65D2575/30; B65D2575/36; B65D2575/361; B65D2575/362; B65D2575/363
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) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |