Patent US3497174A successfully refreshed from Google Patents.
US3497174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core-former
Assignee: MADAME SUZANNE NAYAGAM NEE PERRIN
•
Filing: 1967-02-23
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Granted: 1970-02-24
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Expires: 1987-02-23
Abstract
No abstract record available.
Inventors
- 👤 Tharma Nayagam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:48
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/0002; B28B7/0011; B28B7/28; B28B7/30; E; E04; E04G; E04G15/00; E04G15/06; E04G15/063; E04G15/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1060188A
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US1112034A
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US1342208A
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GB266424A
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US2030724A
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US2138693A
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US2507924A
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US2819511A
Cited
US2969575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |