Patent US3547681A successfully refreshed from Google Patents.
US3547681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallic composites
Assignee: GTE Sylvania Inc
•
Filing: 1968-04-18
•
Granted: 1970-12-15
•
Expires: 1988-04-18
Abstract
No abstract record available.
Inventors
- 👤 Dean D Lawthers
- 👤 George T Pepino Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:49
CPC Classifications
B; B22; B22F; B22F7/00; B22F7/02; B22F7/04; C; C23; C23C; C23C24/00; C23C24/08; C23C26/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12021; Y10T428/12028; Y10T428/12042; Y10T428/12063; Y10T428/12139; Y10T428/1216; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12812; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942
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) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |