US2776581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed control devices
Assignee: Individual
•
Filing: 1952-11-12
•
Granted: 1957-01-08
•
Expires: 1972-11-12
Abstract
No abstract record available.
Inventors
- 👤 Alfred J Hamlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:11
CPC Classifications
B; B60; B60K; B60K31/00; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20528; Y10T74/20534; Y10T74/20576; Y10T74/20582; Y10T74/2063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US195650A
Cited
US1325430A
Cited
US1759355A
Cited
US2118730A
Cited
US2251087A
Cited
US2336447A
Cited
US2581123A
Cited
US2519859A
Cited
US2567529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |