Patent US2505891A successfully refreshed from Google Patents.
US2505891A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1946-10-18
•
Granted: 1950-05-02
•
Expires: 1966-10-18
Abstract
No abstract record available.
Inventors
- 👤 Jerome F Grogan
- 👤 Dorothy A Grogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:18
CPC Classifications
A; A41; A41B; A41B13/00; A41B13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US219820A
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US348181A
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US584490A
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US1195904A
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US1169500A
Cited
FR514933A
Cited
FR26255E
Cited
US1669188A
Cited
US1928330A
Cited
US2054310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-01 | 1953-10-31 | 1954-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-01 | 1957-10-31 | 1958-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-01 | 1961-10-31 | 1962-05-02 | $7700.00 | Window Closed / Lapsed |