US2861147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring arrangement
Assignee: US Philips Corp
•
Filing: 1955-10-27
•
Granted: 1958-11-18
•
Expires: 1975-10-27
Abstract
No abstract record available.
Inventors
- 👤 Couveld Johan Hinrich
- 👤 Jong Hendrik Johannes De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:14
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/54; H01H50/56; H01H50/58; F; F16; F16H; F16H19/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |