Patent US3135295A successfully refreshed from Google Patents.
US3135295A
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Bellows expansion unit utilizing support rings
Assignee: Individual
•
Filing: 1961-11-09
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Granted: 1964-06-02
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Expires: 1981-11-09
Abstract
No abstract record available.
Inventors
- 👤 Eugene H Ziebold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:21
CPC Classifications
F; F16; F16L; F16L51/00; F16L51/02; F16L51/025; F16L51/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US581343A
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US582804A
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US1615591A
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US1733455A
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US2314776A
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US2412271A
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US2573530A
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US2818636A
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US2822194A
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US2886885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |