US2831094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable resistor construction
Assignee: Bourns Inc
•
Filing: 1954-11-16
•
Granted: 1958-04-15
•
Expires: 1974-11-16
Abstract
No abstract record available.
Inventors
- 👤 Marlan E Bourns
- 👤 Marvin E Harrison
- 👤 Robert M Whitehorn
- 👤 Richard C Tyson
- 👤 Robert H Mellor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:43
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/38; H01C10/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1568297A
Cited
US1660979A
Cited
US1967842A
Cited
US2339721A
Cited
US2706230A
Cited
US2668218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |