Patent US2381955A successfully refreshed from Google Patents.
US2381955A
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Envelope machine
Assignee: P L ANDREWS Corp
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Filing: 1943-12-04
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Granted: 1945-08-14
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Expires: 1963-12-04
Abstract
No abstract record available.
Inventors
- 👤 Hoffman Louis
- 👤 Dalmen August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:08
CPC Classifications
B; B31; B31B; B31B50/00; B31B70/00; B31B70/74; B31B70/81; B31B70/82; B31B70/83; B31B50/74; B31B50/81; B31B50/82; B31B50/83; Y; Y10; Y10S; Y10S83/00; Y10S83/911; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/21; Y10T83/2113; Y10T83/2116; Y10T83/2183; Y10T83/219
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) | 1948-08-13 | 1949-02-12 | 1949-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-08-13 | 1953-02-12 | 1953-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-08-13 | 1957-02-12 | 1957-08-14 | $7700.00 | Window Closed / Lapsed |