US1636209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hook
Assignee: STANDARD MACHINE CO
•
Filing: 1923-01-22
•
Granted: 1927-07-19
•
Expires: 1943-01-22
Abstract
No abstract record available.
Inventors
- 👤 Bergsten John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:18
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/02; E21B19/04; F; F16; F16B; F16B45/00; F16B45/02; F16B45/031
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) | 1930-07-18 | 1931-01-17 | 1931-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-07-18 | 1935-01-17 | 1935-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-07-18 | 1939-01-17 | 1939-07-19 | $7700.00 | Window Closed / Lapsed |