US2347721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine
Assignee: Briggs Manufacturing Co
•
Filing: 1941-03-12
•
Granted: 1944-05-02
•
Expires: 1961-03-12
Abstract
No abstract record available.
Inventors
- 👤 Tjaarda John
- 👤 Gunnar E Ehrling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:05
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/02; F02F1/04; F02F1/045; Y; Y10; Y10S; Y10S285/00; Y10S285/912; Y10S411/00; Y10S411/955; Y10S411/974; Y10S411/991; Y10S411/992
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) | 1947-05-02 | 1947-11-01 | 1948-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-05-02 | 1951-11-01 | 1952-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-05-02 | 1955-11-01 | 1956-05-02 | $7700.00 | Window Closed / Lapsed |