US2061885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for manufacturing window envelopes
Assignee: BALTIMORE PAPER Co
•
Filing: 1931-08-21
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Granted: 1936-11-24
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Expires: 1951-08-21
Abstract
No abstract record available.
Inventors
- 👤 Charles J Wensler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:22
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/74; B31B70/81; B31B70/82; B31B70/83; B31B2150/00; B31B2160/00; B31B2160/10; Y; Y10; Y10S; Y10S493/00; Y10S493/916; Y10S493/917; Y10S493/919; Y10T; Y10T156/00; Y10T156/12; Y10T156/1304; Y10T156/1309
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) | 1939-11-24 | 1940-05-25 | 1940-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-11-24 | 1944-05-25 | 1944-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-11-24 | 1948-05-25 | 1948-11-24 | $7700.00 | Window Closed / Lapsed |