Patent US3056492A successfully refreshed from Google Patents.
US3056492A
Expired / Lapsed
US
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Fluid containers
Assignee: Polaroid Corp
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Filing: 1960-10-03
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Granted: 1962-10-02
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Expires: 1980-10-03
Abstract
No abstract record available.
Inventors
- 👤 John E Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:37
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/32; G03C8/34; G03B; G03B17/00; G03B17/48; G03B17/50; G03B17/52
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
A FLUID CONTAINER HAVING A PAIR OF OPPOSED WALLS SECURED TOGETHER TO PROVIDE A LIQUID-CAVITY, ONE OF SAID PAIR OF OPPOSED WALLS HAVING INTERPOSED BETWEEN THE BONDED MARGINAL PORTIONS OF ONE EDGE OF SAID PAIR OF OPPOSED WALLS AN ADHESIVE COMPOSITION COMPRISING CELLULOSE NITRATE AND AN ACRYLIC ESTER RESIN, EACH OF SAID
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |