Patent US3514921A successfully refreshed from Google Patents.
US3514921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for refuse disposal by compression
Assignee: Individual
•
Filing: 1968-05-06
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Granted: 1970-06-02
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Expires: 1988-05-06
Abstract
No abstract record available.
Inventors
- 👤 Kunitoshi Tezuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:03
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/30; B30B9/3003; B30B9/3014; B30B9/3032; Y; Y10; Y10S; Y10S493/00; Y10S493/916; Y10S493/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2884750A
Cited
US3266214A
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US3343334A
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US3354600A
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US3330088A
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US3307320A
Cited
US3403620A
Cited
US3451185A
Cited
US3451190A
Cited
US3405744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |