Patent US2947873A successfully refreshed from Google Patents.
US2947873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amplifier for safe-ray
Assignee: Toledo Scale Corp
•
Filing: 1955-09-23
•
Granted: 1960-08-02
•
Expires: 1975-09-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Borden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:17
CPC Classifications
B; B66; B66B; B66B13/00; B66B13/24; B66B13/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1822152A
Cited
US1947079A
Cited
US2252457A
Cited
US2459356A
Cited
US2499921A
Cited
US2614227A
Cited
US2745021A
Cited
US2644893A
Cited
US2682624A
Cited
US2693572A
Cited
US2831981A
Cited
US2848658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |