US2070617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boiler feed water regulator
Assignee: Individual
•
Filing: 1935-11-05
•
Granted: 1937-02-16
•
Expires: 1955-11-05
Abstract
No abstract record available.
Inventors
- 👤 Offutt Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:26
CPC Classifications
F; F22; F22D; F22D5/00; F22D5/24; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7306; Y10T137/7329; Y10T137/7358; Y10T137/7368; Y10T137/742; Y10T137/7423
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) | 1940-02-16 | 1940-08-17 | 1941-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-02-16 | 1944-08-17 | 1945-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-02-16 | 1948-08-17 | 1949-02-16 | $7700.00 | Window Closed / Lapsed |