US3442498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined waste treatment and cementmaking method and means
Assignee: Boeing North American Inc
•
Filing: 1967-06-13
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Granted: 1969-05-06
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Expires: 1987-06-13
Abstract
No abstract record available.
Inventors
- 👤 Noah S Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:24
CPC Classifications
C; C04; C04B; C04B7/00; C04B7/02; C02; C02F; C02F11/00; C02F11/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US154093A
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US1220735A
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US1876123A
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US2044584A
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US2044582A
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US3342731A
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US3345288A
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US3279603A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |