US2970539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1953-03-20
•
Granted: 1961-02-07
•
Expires: 1973-03-20
Abstract
No abstract record available.
Inventors
- 👤 John P Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:37
CPC Classifications
A; A45; A45C; A45C11/00; A45C11/36; B; B41; B41K; B41K1/00; B41K1/02; B41K1/36; B41K1/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE493203C
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US212175A
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US1142560A
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US1285094A
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US1363017A
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US1657437A
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US2258501A
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GB568467A
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US2584908A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |