US2574802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Map holder
Assignee: Individual
•
Filing: 1947-08-12
•
Granted: 1951-11-13
•
Expires: 1967-08-12
Abstract
No abstract record available.
Inventors
- 👤 Herrman B Tobias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:31
CPC Classifications
G; G09; G09B; G09B29/00; G09B29/10; Y; Y10; Y10S; Y10S40/00; Y10S40/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US807888A
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US1347222A
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US1538233A
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US1632812A
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US1686212A
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US1814690A
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US2029089A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |