US2864638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking device for split clamping rings
Assignee: Rheem Manufacturing Co
•
Filing: 1955-06-06
•
Granted: 1958-12-16
•
Expires: 1975-06-06
Abstract
No abstract record available.
Inventors
- 👤 Theodore R Nelson
- 👤 Norman W Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:07
CPC Classifications
F; F16; F16B; F16B2/00; F16B2/02; F16B2/18; F16B2/185; B; B65; B65D; B65D45/00; B65D45/32; B65D45/34; B65D45/345; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1424; Y10T292/00; Y10T292/20; Y10T292/205; Y10T292/212; Y10T292/216
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2579974A
Cited
US2579975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |