Patent US3380252A successfully refreshed from Google Patents.
US3380252A
Expired / Lapsed
US
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Installation for preserving fresh-water supply
Assignee: Individual
•
Filing: 1965-03-18
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Granted: 1968-04-30
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Expires: 1985-03-18
Abstract
No abstract record available.
Inventors
- 👤 Renshaw Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:06
CPC Classifications
E; E03; E03B; E03B3/00; E03B3/06; E03B3/08; E03B3/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US599971A
Cited
USRE25199E
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US744694A
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US1159055A
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US1805993A
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US2337472A
Cited
US3090202A
Cited
US3323309A
Cited
US3199592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |