US2954443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: AMERICAN RES BUREAU Inc
•
Filing: 1957-08-02
•
Granted: 1960-09-27
•
Expires: 1977-08-02
Abstract
No abstract record available.
Inventors
- 👤 Diggins Bartholomew
- 👤 Blanc Robert E Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:28
CPC Classifications
H; H01; H01H; H01H19/00; H01H19/54; H01H19/56; H01H19/58; H01H19/64; H01H19/02; H01H19/10; H01H19/14; H01H2019/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB458446A
Cited
DE665200C
Cited
US2528345A
Cited
US2489124A
Cited
US2545837A
Cited
US2751449A
Cited
GB768387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |