US2795172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic tab inserting mechanism for an envelope making machine
Assignee: United States Envelope Co
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Filing: 1954-06-08
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Granted: 1957-06-11
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Expires: 1974-06-08
Abstract
No abstract record available.
Inventors
- 👤 Bror E Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:17
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/74; B31B2150/00; B31B2160/00; B31B2160/10; B31B70/006; Y; Y10; Y10S; Y10S83/00; Y10S83/911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |