US2748675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Envelope making machine
Assignee: Wolf Envelope Co
•
Filing: 1951-10-06
•
Granted: 1956-06-05
•
Expires: 1971-10-06
Abstract
No abstract record available.
Inventors
- 👤 Harry F Affelder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:46
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/26; B31B70/261; B31B2150/00; B31B2160/00; B31B2160/10; B31B2160/102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1886832A
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US1832988A
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US1803370A
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US1843763A
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US2132227A
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US2190414A
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US2307907A
Cited
US2612088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |