US2007883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Verdol paper
Assignee: Individual
•
Filing: 1933-09-18
•
Granted: 1935-07-09
•
Expires: 1953-09-18
Abstract
No abstract record available.
Inventors
- 👤 Spahn Johann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:01
CPC Classifications
D; D03; D03C; D03C3/00; D03C3/16; Y; Y10; Y10S; Y10S215/00; Y10S215/02
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) | 1938-07-08 | 1939-01-07 | 1939-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-07-08 | 1943-01-07 | 1943-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-07-08 | 1947-01-07 | 1947-07-09 | $7700.00 | Window Closed / Lapsed |