US3396103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for mounting membrane filters on tubular supports without laterally stressing the active surface
Assignee: Waterdrink Inc
•
Filing: 1965-04-01
•
Granted: 1968-08-06
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Expires: 1985-04-01
Abstract
No abstract record available.
Inventors
- 👤 Morgan G Huntington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:39
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/06; B01D63/062; B01D69/00; B01D69/04; B01D69/046; B01D2315/00; B01D2315/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE211180C
Cited
DE216286C
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US1427031A
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US2674440A
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US3055504A
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US3266630A
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DK84684A
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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) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |