US3022972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supporting trough
Assignee: FCI USA LLC
•
Filing: 1959-07-21
•
Granted: 1962-02-27
•
Expires: 1979-07-21
Abstract
No abstract record available.
Inventors
- 👤 Roy F E Bunston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:08
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/06; H02G3/0608; H02G3/04; H02G3/0456
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA572670A
Cited
US1676485A
Cited
US1853840A
Cited
US1856948A
Cited
US2917259A
Cited
US2905416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |