US1806589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermann espig and wolfgang teubner
Assignee: —
•
Filing: —
•
Granted: 1931-05-26
•
Expires: 1948-05-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:07
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/53; C04B41/5338; C04B41/5361; C04B41/80; C04B41/91; C30; C30B; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B29/26; G; G04; G04B; G04B31/00; G04B31/06
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) | 1934-05-25 | 1934-11-24 | 1935-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-05-25 | 1938-11-24 | 1939-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-05-25 | 1942-11-24 | 1943-05-26 | $7700.00 | Window Closed / Lapsed |