US2880656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window envelope machine
Assignee: PARTEN MACHINERY CO
•
Filing: 1954-06-25
•
Granted: 1959-04-07
•
Expires: 1974-06-25
Abstract
No abstract record available.
Inventors
- 👤 Ormonde P Welsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:24
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/74; B31B70/81; B31B70/82; B31B70/826; B31B2150/00; B31B2160/00; B31B2160/10; B31B2160/102; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1304; Y10T156/1309
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1372223A
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US1406661A
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US1827539A
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US2061885A
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US1998701A
Cited
US2202496A
Cited
US2606681A
Cited
US2635776A
Cited
US2613008A
Cited
US2723604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |