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US4522502B1
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US4522502B1 - - Google Patents
Assignee: STRANCO
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Filing: 1983-10-06
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Granted: 1991-07-23
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Expires: 2003-10-06
Abstract
No abstract record available.
Inventors
- 👤 L Brazelton Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:46
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/686; B; B01; B01F; B01F27/00; B01F27/80; B01F33/00; B01F33/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-22 | 1995-01-21 | 1995-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-22 | 1999-01-21 | 1999-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-22 | 2003-01-21 | 2003-07-23 | $7700.00 | Window Closed / Lapsed |