Patent US2804821A successfully refreshed from Google Patents.
US2804821A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making check protecting stamps
Assignee: Individual
•
Filing: 1953-12-28
•
Granted: 1957-09-03
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Expires: 1973-12-28
Abstract
No abstract record available.
Inventors
- 👤 Louis J Misuraca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:54
CPC Classifications
B; B41; B41K; B41K1/00; B41K1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1261587A
Cited
US1282796A
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US1448994A
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US1819375A
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US2206088A
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US2311013A
Cited
US2305853A
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US2609749A
Cited
US2500598A
Cited
US2633799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |