US1232121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for producing a transparent panel in paper and the like.
Assignee: United States Envelope Co
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Filing: 1913-07-28
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Granted: 1917-07-03
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Expires: 1933-07-28
Abstract
No abstract record available.
Inventors
- 👤 Willard E Swift
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:58
CPC Classifications
B; B05; B05C; B05C5/00; B05C5/02; B05C5/0254
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) | 1920-07-02 | 1921-01-01 | 1921-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-07-02 | 1925-01-01 | 1925-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-07-02 | 1929-01-01 | 1929-07-03 | $7700.00 | Window Closed / Lapsed |