Patent US2272490A successfully refreshed from Google Patents.
US2272490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tripod
Assignee: PAUL BENNINGHOFEN AND FRITZ G
•
Filing: 1940-05-14
•
Granted: 1942-02-10
•
Expires: 1960-05-14
Abstract
No abstract record available.
Inventors
- 👤 Harry J Waechter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:11
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/20; F16M11/24; F16M11/26; F16M11/28; F16M11/30; F16M11/02; F16M11/04; F16M11/06; F16M11/10; F16M11/242
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) | 1945-02-09 | 1945-08-11 | 1946-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-02-09 | 1949-08-11 | 1950-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-02-09 | 1953-08-11 | 1954-02-10 | $7700.00 | Window Closed / Lapsed |