US3516935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compacted body and method of formation
Assignee: AT&T Inc
•
Filing: 1967-04-10
•
Granted: 1970-06-23
•
Expires: 1987-04-10
Abstract
No abstract record available.
Inventors
- 👤 Frank R Monforte
- 👤 Frank J Schnettler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:34
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/28; C04B33/30; C04B35/00; C04B35/01; C04B35/26; C04B35/2683; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/10; H01F1/11
Claims Analysis
Total Claims: 0
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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) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |