Patent US3500522A successfully refreshed from Google Patents.
US3500522A
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US
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Assignee: Carmet Co
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Filing: 1967-03-01
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Granted: 1970-03-17
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Expires: 1987-03-01
Abstract
No abstract record available.
Inventors
- 👤 Henry W Stier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:01
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/04; B23B2210/00; B23B2210/08; Y; Y10; Y10T; Y10T407/00; Y10T407/22; Y10T407/2272; Y10T407/228; Y10T407/2282; Y10T407/229
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1090810A
Cited
US1104980A
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US1480987A
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US1484332A
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US2964833A
Cited
GB989133A
Cited
US3158921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |