US1836416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air pressure regulator
Assignee: BBC Brown Boveri AG Germany
•
Filing: 1927-08-22
•
Granted: 1931-12-15
•
Expires: 1947-08-22
Abstract
No abstract record available.
Inventors
- 👤 Weber Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:27
CPC Classifications
F; F04; F04B; F04B41/00; F04B41/02; G; G05; G05D; G05D16/00; G05D16/14; G05D16/18; F04B35/00; F04B35/04; F04B49/00; F04B49/02; F04B49/022; F04B2205/00; F04B2205/05; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7738; Y10T137/7837; Y10T137/7904; Y10T137/7905
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1934-12-14 | 1935-06-15 | 1935-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-12-14 | 1939-06-15 | 1939-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-12-14 | 1943-06-15 | 1943-12-15 | $7700.00 | Window Closed / Lapsed |