US2026023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Driving mechanism
Assignee: WHITALL TATUM CO
•
Filing: 1932-01-15
•
Granted: 1935-12-31
•
Expires: 1952-01-15
Abstract
No abstract record available.
Inventors
- 👤 Bois David Irvin Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:14
CPC Classifications
C; C03; C03B; C03B11/00; C03B11/16; C03B11/02; C03B7/00; C03B7/14; C03B7/16; F; F16; F16H; F16H61/00; F16H2710/00; F16H2710/16; F16H2710/22
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) | 1938-12-30 | 1939-07-01 | 1939-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-12-30 | 1943-07-01 | 1943-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-12-30 | 1947-07-01 | 1947-12-31 | $7700.00 | Window Closed / Lapsed |