US2831707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Check and envelope assembly
Assignee: Individual
•
Filing: 1955-11-18
•
Granted: 1958-04-22
•
Expires: 1975-11-18
Abstract
No abstract record available.
Inventors
- 👤 Jr William H James
- 👤 Rex E Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:56
CPC Classifications
B; B42; B42D; B42D15/00; B42D15/02; B42D15/04; B42D15/08; B42D25/00; B42D25/20; B42D25/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1424837A
Cited
US846064A
Cited
US1960054A
Cited
US1946751A
Cited
US2072040A
Cited
US2260602A
Cited
US2396221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |