US2602574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide rule belt carrier
Assignee: Keuffel and Esser Co
•
Filing: 1949-10-19
•
Granted: 1952-07-08
•
Expires: 1969-10-19
Abstract
No abstract record available.
Inventors
- 👤 Mangold George
- 👤 Zener Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:40
CPC Classifications
A; A45; A45F; A45F5/00; A45F5/02; A45F5/021; Y; Y10; Y10T; Y10T24/00; Y10T24/34; Y10T24/3484; Y10T24/3485; Y10T24/3489; Y10T24/3492
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US551512A
Cited
US702398A
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US778636A
Cited
US815277A
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US1208728A
Cited
US1816284A
Cited
GB442627A
Cited
US2543313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |