Patent US3539772A successfully refreshed from Google Patents.
US3539772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heatable package with displaceable fluent substance
Assignee: Individual
•
Filing: 1969-08-28
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Granted: 1970-11-10
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Expires: 1989-08-28
Abstract
No abstract record available.
Inventors
- 👤 Paul Eisler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:20
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/32; B65D81/3233; B65D81/3244; B65D81/34; B65D81/3476
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2174319A
Cited
CH231306A
Cited
US2879367A
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US2944695A
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US3100711A
Cited
US3210199A
Cited
US3197076A
Cited
US3296415A
Cited
US3281576A
Cited
US3347419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |