US3429237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for applying transparent material to window openings of envelope blanks and the like
Assignee: Winkler and Duennebier Maschinefabrik und Eisengiesserei GmbH
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Filing: 1967-09-01
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Granted: 1969-02-25
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Expires: 1987-09-01
Abstract
No abstract record available.
Inventors
- 👤 Hermann Subklew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:27
CPC Classifications
B; B65; B65D; B65D27/00; B65D27/04; B31; B31B; B31B2150/00; B31B2160/00; B31B2160/10; B31B2160/102; B31B2170/00; B31B70/00; B31B70/74; B31B70/81; B31B70/82; B31B70/826; Y; Y10; Y10S; Y10S493/00; Y10S493/916; Y10S493/917; Y10S493/919; Y10T; Y10T156/00; Y10T156/12; Y10T156/1304; Y10T156/1309; Y10T156/17; Y10T156/1702; Y10T156/1744; Y10T156/1751; Y10T156/1754; Y10T156/1759
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2254217A
Cited
US2986976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |