US1941683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Booster pump apparatus for fire extinguishing systems
Assignee: Automatic Sprinkler Corp
•
Filing: 1928-02-02
•
Granted: 1934-01-02
•
Expires: 1948-02-02
Abstract
No abstract record available.
Inventors
- 👤 John R Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:50
CPC Classifications
A; A62; A62C; A62C35/00; A62C35/58; A62C35/60; A62C35/605
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) | 1937-01-01 | 1937-07-03 | 1938-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-01-01 | 1941-07-03 | 1942-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-01-01 | 1945-07-03 | 1946-01-02 | $7700.00 | Window Closed / Lapsed |