Patent US6045397A successfully refreshed from Google Patents.
US1635530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston ring
Assignee: Individual
•
Filing: 1920-11-05
•
Granted: 1927-07-12
•
Expires: 1940-11-05
Abstract
No abstract record available.
Inventors
- 👤 Ernest N Broderick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:21
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/26; Y; Y10; Y10S; Y10S148/00; Y10S148/902; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49274; Y10T29/49277; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12236; Y10T428/12493; Y10T428/12639; Y10T428/12646
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) | 1930-07-11 | 1931-01-10 | 1931-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-07-11 | 1935-01-10 | 1935-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-07-11 | 1939-01-10 | 1939-07-12 | $7700.00 | Window Closed / Lapsed |