US1191393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balancing-ring.
Assignee: BF Sturtevant Co
•
Filing: 1912-08-12
•
Granted: 1916-07-18
•
Expires: 1932-08-12
Abstract
No abstract record available.
Inventors
- 👤 Carl O Bergstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:28
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/32; F16F15/36; F16F15/363; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/211; Y10T74/2111
Claims Analysis
Total Claims: 0
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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) | 1919-07-18 | 1920-01-17 | 1920-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-07-18 | 1924-01-17 | 1924-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-07-18 | 1928-01-17 | 1928-07-18 | $7700.00 | Window Closed / Lapsed |