Patent US3469698A successfully refreshed from Google Patents.
US3469698A
Expired / Lapsed
US
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Controlled flow drain
Assignee: Josam Manufacturing Co
•
Filing: 1967-04-05
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Granted: 1969-09-30
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Expires: 1987-04-05
Abstract
No abstract record available.
Inventors
- 👤 Louis Blendermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:48
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/04; E04D13/0404; E04D13/0409; E04D2013/0413; E04D2013/0427
Claims Analysis
Total Claims: 0
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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) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |