US2491070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure retaining means
Assignee: Briggs and Stratton Corp
•
Filing: 1947-10-27
•
Granted: 1949-12-13
•
Expires: 1967-10-27
Abstract
No abstract record available.
Inventors
- 👤 Werner E Armstrong
- 👤 Joseph V Reichenbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:10
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/04; F01M11/0408
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US332068A
Cited
US678024A
Cited
US793962A
Cited
US1047012A
Cited
US2099558A
Cited
US2133520A
Cited
GB452902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |