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Patent US3474171A successfully refreshed from Google Patents.
US3474171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2,2-dimethyl-2,3-dihydrobenzofuranyl-7-n-methylcarbamate
Assignee: FMC Corp
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Filing: 1964-01-23
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Granted: 1969-10-21
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Expires: 1984-01-23
Abstract
No abstract record available.
Inventors
- 👤 William G Scharpf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:24
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/78; C07D307/79; C07D307/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
THE COMPOUND 2,2-DIMETHYL - 2,3 - DIHYDROENZOFURANYL-7-METHYLCARBAMATE, OF THE FORMULA
Claim 2
Dependent Claim
10 words
THE COMPOUND 2,2-DIMETHYL - 2,3 - DIHYDROENZOFURANYL-7-METHYLCARBAMATE, OF THE FORMULA
References Cited (Backward Citations)
US2418458A
Cited
US2362479A
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US2406294A
Cited
US2659734A
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US3073848A
Cited
US3131199A
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 |