Patent US2335780A successfully refreshed from Google Patents.
US2335780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Testing apparatus
Assignee: Individual
•
Filing: 1941-08-19
•
Granted: 1943-11-30
•
Expires: 1961-08-19
Abstract
No abstract record available.
Inventors
- 👤 Mccoy Charles Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:35
CPC Classifications
F; F02; F02P; F02P17/00; F02P17/12; F02B; F02B75/00; F02B75/16; F02B75/18; F02B2075/1804; F02B2075/1856
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) | 1946-11-29 | 1947-05-31 | 1947-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-11-29 | 1951-05-31 | 1951-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-11-29 | 1955-05-31 | 1955-11-30 | $7700.00 | Window Closed / Lapsed |