US2850937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snap type bolt tension indicator
Assignee: Individual
•
Filing: 1955-04-28
•
Granted: 1958-09-09
•
Expires: 1975-04-28
Abstract
No abstract record available.
Inventors
- 👤 Eldon K Ralston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:35
CPC Classifications
F; F16; F16B; F16B43/00; E; E21; E21D; E21D21/00; E21D21/02; F16B31/00; F16B31/02; F16B31/028; Y; Y10; Y10S; Y10S116/00; Y10S116/34; Y10S116/35
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1221899A
Cited
US1276325A
Cited
US1573961A
Cited
US1616232A
Cited
US1774695A
Cited
US1963535A
Cited
US1908799A
Cited
GB552021A
Cited
US2464152A
Cited
US2468847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |