Patent US3512780A successfully refreshed from Google Patents.
US3512780A
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US
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Folded coupon with detachable puzzle piece
Assignee: United States Envelope Co
•
Filing: 1968-02-06
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Granted: 1970-05-19
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Expires: 1988-02-06
Abstract
No abstract record available.
Inventors
- 👤 Robert D Allison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:23
CPC Classifications
A; A63; A63F; A63F3/00; A63F3/06; A63F3/065; A63F3/069; A63F9/00; A63F9/06; A63F9/10; Y; Y10; Y10S; Y10S283/00; Y10S283/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US163912A
Cited
DE583739C
Cited
US1983004A
Cited
US2054309A
Cited
US2180808A
Cited
US2185392A
Cited
US2309398A
Cited
US2831278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |