US1986706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Labyrinth packing
Assignee: Individual
•
Filing: 1931-07-24
•
Granted: 1935-01-01
•
Expires: 1951-07-24
Abstract
No abstract record available.
Inventors
- 👤 Beyer Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:16
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/02; F01D11/04; F01D11/06; F01K; F01K3/00; F01K3/18; F01K3/26; F01K3/267; F01K7/00; F01K7/34; F01K7/44; F04; F04D; F04D29/00; F04D29/08; F16; F16J; F16J15/00; F16J15/44; F16J15/447; F16J15/4472
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) | 1937-12-31 | 1938-07-02 | 1939-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-12-31 | 1942-07-02 | 1943-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-12-31 | 1946-07-02 | 1947-01-01 | $7700.00 | Window Closed / Lapsed |