Patent US2697308A successfully refreshed from Google Patents.
US2697308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing synthetic jewels
Assignee: The General Electric Company PLC
•
Filing: 1952-07-15
•
Granted: 1954-12-21
•
Expires: 1972-07-15
Abstract
No abstract record available.
Inventors
- 👤 Dauncey Leonard Arthur
- 👤 Timms Donald George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:10
CPC Classifications
C; C30; C30B; C30B11/00; C30B11/04; C30B11/08; C30B11/10; Y; Y10; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1028; Y10T74/00; Y10T74/15; Y10T74/1526
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |