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US3489693A
Expired / Lapsed
US
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Carbon dioxide absorbent
Assignee: Automatic Sprinkler Corp
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Filing: 1967-04-03
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Granted: 1970-01-13
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Expires: 1987-04-03
Abstract
No abstract record available.
Inventors
- 👤 Robert M Bovard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:48
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/04; B01J20/041; B01J20/30; B01J20/3028; B01J2220/00; B01J2220/40; B01J2220/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2382371A
Cited
US2462277A
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US3207700A
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US3141729A
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US3274125A
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US3321277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |