US3039318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring counterbalance device for raising and lowering a weight
Assignee: Ametek Inc
•
Filing: 1959-10-28
•
Granted: 1962-06-19
•
Expires: 1979-10-28
Abstract
No abstract record available.
Inventors
- 👤 Philip C Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:27
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/28; E; E05; E05D; E05D13/00; E05D13/10; E05D13/12; E05D13/1276; E05D13/14; E05D13/1207; E05D13/1223; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18832; Y10T74/18848; Y10T74/20; Y10T74/20396; Y10T74/20402; Y10T74/2042; Y10T74/21; Y10T74/2142; Y10T74/2154; Y10T74/2158
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR593487A
Cited
US981286A
Cited
US1299701A
Cited
US1607080A
Cited
US1832870A
Cited
DE736994C
Cited
US2609193A
Cited
US2609191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |