US3229893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous self-returned mailing envelope
Assignee: Individual
•
Filing: 1963-12-09
•
Granted: 1966-01-18
•
Expires: 1983-12-09
Abstract
No abstract record available.
Inventors
- 👤 Stein Myron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:27
CPC Classifications
B; B42; B42D; B42D15/00; B42D15/02; B42D15/04; B42D15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189917078A
Cited
US1256145A
Cited
GB122132A
Cited
US2165195A
Cited
US2128275A
Cited
US2302455A
Cited
US2984403A
Cited
US3159329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |