Patent US2498150A successfully refreshed from Google Patents.
US2498150A
Expired / Lapsed
US
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Change maker
Assignee: Individual
•
Filing: 1946-07-29
•
Granted: 1950-02-21
•
Expires: 1966-07-29
Abstract
No abstract record available.
Inventors
- 👤 Brahe Dan Stuart
- 👤 Brahe Lena Bollman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:19
CPC Classifications
G; G07; G07D; G07D1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US479688A
Cited
US563435A
Cited
US635943A
Cited
GB190203916A
Cited
US1080381A
Cited
GB459852A
Cited
US2265748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |