Patent US2034971A successfully refreshed from Google Patents.
US2034971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keeper
Assignee: Individual
•
Filing: 1934-03-02
•
Granted: 1936-03-24
•
Expires: 1954-03-02
Abstract
No abstract record available.
Inventors
- 👤 Charles L Brockway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:05
CPC Classifications
E; E05; E05B; E05B83/00; E05B83/16; E05B83/24; Y; Y10; Y10S; Y10S292/00; Y10S292/14; Y10T; Y10T292/00; Y10T292/08; Y10T292/0911; Y10T292/0926; Y10T292/0928; Y10T292/0945; Y10T292/1043; Y10T292/1075; Y10T292/1082; Y10T292/42; Y10T292/444; Y10T292/68
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) | 1939-03-24 | 1939-09-23 | 1940-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-03-24 | 1943-09-23 | 1944-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-03-24 | 1947-09-23 | 1948-03-24 | $7700.00 | Window Closed / Lapsed |