Patent US2777068A successfully refreshed from Google Patents.
US2777068A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1952-08-27
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Granted: 1957-01-08
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Expires: 1972-08-27
Abstract
No abstract record available.
Inventors
- 👤 Joseph T Bowser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:00
CPC Classifications
G; G03; G03B; G03B42/00; G03B42/02; G03B42/04; G03B42/042; A; A61; A61B; A61B6/00; A61B6/44; A61B6/4429; A61B6/4435; A61B6/50; A61B6/51; A61B6/512
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1445169A
Cited
US1557796A
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US2090933A
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US2035051A
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US2193993A
Cited
US2245395A
Cited
US2392109A
Cited
CH257575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |