US3050192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1959-04-13
•
Granted: 1962-08-21
•
Expires: 1979-04-13
Abstract
No abstract record available.
Inventors
- 👤 Beutler Friedrich August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:45
CPC Classifications
B; B01; B01D; B01D37/00; B01D37/02; B01D29/00; B01D29/11; B01D29/114; B01D29/44; B01D29/46; B01D29/50; B01D29/52; B01D29/62; B01D29/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1557585A
Cited
US1744510A
Cited
DE736968C
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US2286432A
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US2601521A
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US2592104A
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GB707275A
Cited
US2828862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |