Patent US3222441A successfully refreshed from Google Patents.
US3222441A
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US
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Method for making a plastic bellows elbow with spigot and socket ends
Assignee: Fanner Manufacturing Co
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Filing: 1962-12-17
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Granted: 1965-12-07
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Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Seymour N Schlein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:54
CPC Classifications
F; F16; F16L; F16L43/00; F16L43/008; B; B29; B29C; B29C65/00; B29C65/66; B29C65/665; E; E04; E04D; E04D13/00; E04D13/04; E04D13/08; B29L; B29L2031/00; B29L2031/703; E04D2013/0833
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE180258C
Cited
GB189819147A
Cited
US1575617A
Cited
CH301099A
Cited
US2766806A
Cited
US2966372A
Cited
US3021571A
Cited
US3139468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |