Patent US2912807A successfully refreshed from Google Patents.
US2912807A
Expired / Lapsed
US
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Sheet folding and envelope filling machine
Assignee: Individual
•
Filing: 1954-12-27
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Granted: 1959-11-17
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Expires: 1974-12-27
Abstract
No abstract record available.
Inventors
- 👤 Ernst W Kummer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:48
CPC Classifications
B; B43; B43M; B43M3/00; B43M3/04; B43M3/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1046707A
Cited
US1094304A
Cited
US1245421A
Cited
US1641406A
Cited
US1779105A
Cited
US1720699A
Cited
US2673016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |