US3473887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum fluoride production
Assignee: Honeywell International Inc
•
Filing: 1968-02-21
•
Granted: 1969-10-21
•
Expires: 1988-02-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur S Chu
- 👤 Almon S Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:20
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/48; C01F7/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA537403A
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US1937885A
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US2588075A
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GB656374A
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US2766185A
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US2867506A
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US2996354A
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US2886899A
Cited
GB911837A
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GB1016894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |