Patent US1834567A successfully refreshed from Google Patents.
US1834567A
Expired / Lapsed
US
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Method of and apparatus for drying the closure flap gumming of envelopes and the like
Assignee: Individual
•
Filing: 1931-01-22
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Granted: 1931-12-01
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Expires: 1951-01-22
Abstract
No abstract record available.
Inventors
- 👤 Winkler Alfred
- 👤 Dunnebier Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:39
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/74; B31B70/76; B31B2150/00; B31B2160/00; B31B2160/10; B31B70/60; B31B70/62; B31B70/626
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) | 1934-11-30 | 1935-06-01 | 1935-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-11-30 | 1939-06-01 | 1939-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-11-30 | 1943-06-01 | 1943-12-01 | $7700.00 | Window Closed / Lapsed |