Patent US2146946A successfully refreshed from Google Patents.
US2146946A
Expired / Lapsed
US
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Bag manufacture
Assignee: SHELLMAR PRODUCTS Co
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Filing: 1936-10-05
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Granted: 1939-02-14
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Expires: 1956-10-05
Abstract
No abstract record available.
Inventors
- 👤 William H Engel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:00
CPC Classifications
B; B26; B26D; B26D1/00; B26D1/56; B26D1/62; B26D1/626; B31; B31B; B31B70/00; B26D3/00; B26D3/10; B31B2155/00; B31B2160/00; B31B2160/10; B31B70/14; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/0333; Y10T83/0385; Y10T83/0393; Y10T83/404; Y10T83/416; Y10T83/42; Y10T83/465; Y10T83/4766; Y10T83/4769; Y10T83/4772; Y10T83/4795; Y10T83/483; Y10T83/929; Y10T83/9372; Y10T83/9406
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) | 1942-02-13 | 1942-08-15 | 1943-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-13 | 1946-08-15 | 1947-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-13 | 1950-08-15 | 1951-02-14 | $7700.00 | Window Closed / Lapsed |