US3557519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination letter sheet and envelope
Assignee: Kurt H Volk Inc
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Filing: 1968-09-04
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Granted: 1971-01-26
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Expires: 1988-09-04
Abstract
Abstract IN COMBINATION, AN INTEGRAL ENVELOPE-LETTER SHEET AND METHODS FOR THE USE AND PREPARATION THEREOF.
Inventors
- 👤 Randolph S Lyon Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:23
CPC Classifications
B; B42; B42D; B42D5/00; B42D5/02; B42D5/023; B42D5/025; B41; B41L; B41L1/00; B41L1/20; B41L1/26; B41L1/32; B42D15/00; B42D15/02; B42D15/04; B42D15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |