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US2641182A
Expired / Lapsed
US
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Canceling and dating device
Assignee: Individual
•
Filing: 1949-10-26
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Granted: 1953-06-09
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Expires: 1969-10-26
Abstract
No abstract record available.
Inventors
- 👤 John H Koffski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:39
CPC Classifications
B; B41; B41K; B41K1/00; B41K1/22; B41K1/36; B41K1/38; B41K1/40; B41K1/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |