US2880537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Changeable sign
Assignee: Poster Products Inc
•
Filing: 1956-10-31
•
Granted: 1959-04-07
•
Expires: 1976-10-31
Abstract
No abstract record available.
Inventors
- 👤 Stanley J Cygan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:17
CPC Classifications
G; G09; G09F; G09F7/00; G09F7/02; G09F7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE504565A
Cited
US654936A
Cited
GB103975A
Cited
US2588050A
Cited
US2609204A
Cited
US2663105A
Cited
US2745201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |