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US2985387A
Expired / Lapsed
US
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Liquid material distributor
Assignee: Spencer Chemical Co
•
Filing: 1959-10-13
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Granted: 1961-05-23
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Expires: 1979-10-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Fred G Sprang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:35
CPC Classifications
C; C05; C05B; C05B1/00; C05B1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US469211A
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US532085A
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US900869A
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US944440A
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US1133711A
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US2193100A
Cited
US2508874A
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US2832642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |