US2448643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Revolution counter adapted to operate over variable predeterminable periods of time
Assignee: Vinters Armstrongs Ltd
•
Filing: 1943-11-19
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Granted: 1948-09-07
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Expires: 1963-11-19
Abstract
No abstract record available.
Inventors
- 👤 Wilkins Herbert Cornelius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:20
CPC Classifications
G; G06; G06M; G06M3/00; G06M3/02; G06M3/025; G06M3/028
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) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |