Patent US2615735A successfully refreshed from Google Patents.
US2615735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring retaining ring for machine parts
Assignee: Waldes Kohinoor Inc
•
Filing: 1949-12-27
•
Granted: 1952-10-28
•
Expires: 1969-12-27
Abstract
No abstract record available.
Inventors
- 👤 Heimann Heinrich
- 👤 Brozek Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:41
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/10; F16B21/16; F16B21/18; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7018
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB190221745A
Cited
US1741093A
Cited
DE538821C
Cited
US1810093A
Cited
FR851146A
Cited
US2255217A
Cited
CH247513A
Cited
US2423848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |