Patent US3369260A successfully refreshed from Google Patents.
US3369260A
Expired / Lapsed
US
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Flush apparatus for water closets
Assignee: THETFORD ENGINEERING Corp
•
Filing: 1965-10-22
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Granted: 1968-02-20
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Ronald J Sargent
- 👤 Charles L Sargent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:21
CPC Classifications
E; E03; E03D; E03D5/00; E03D5/012; E03D5/02; E03D5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2600619A
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US2754820A
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US2826761A
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FR1162224A
Cited
US3045248A
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US3214772A
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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) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |