Patent US2308900A successfully refreshed from Google Patents.
US2308900A
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Assignee: TRANSOGRAPH Corp
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Filing: 1939-03-23
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Granted: 1943-01-19
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Expires: 1959-03-23
Abstract
No abstract record available.
Inventors
- 👤 Tryon Russell
- 👤 Walter B Hirsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:22
CPC Classifications
B; B44; B44F; B44F1/00; B44F1/02; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/14; Y10T428/1471; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/2486
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-01-18 | 1946-07-20 | 1947-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-01-18 | 1950-07-20 | 1951-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-01-18 | 1954-07-20 | 1955-01-19 | $7700.00 | Window Closed / Lapsed |