US2706812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Null balance control systems
Assignee: American Machine and Metals Inc
•
Filing: 1951-10-20
•
Granted: 1955-04-19
•
Expires: 1971-10-20
Abstract
No abstract record available.
Inventors
- 👤 Dinlocker Robert Irwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:35
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1418
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2016978A
Cited
US2219282A
Cited
US2408524A
Cited
US2362661A
Cited
US2420539A
Cited
US2334543A
Cited
US2360121A
Cited
US2380251A
Cited
US2457558A
Cited
US2503851A
Cited
US2509986A
Cited
US2452862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-18 | 1958-10-18 | 1959-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-18 | 1962-10-18 | 1963-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-18 | 1966-10-18 | 1967-04-19 | $7700.00 | Window Closed / Lapsed |