Patent US2849795A successfully refreshed from Google Patents.
US2849795A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1955-11-15
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Granted: 1958-09-02
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Expires: 1975-11-15
Abstract
No abstract record available.
Inventors
- 👤 Royal A Vissing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:32
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/16; F; F41; F41G; F41G1/00; F41G1/38; F41G1/383
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1925999A
Cited
US815062A
Cited
US2197184A
Cited
US2291821A
Cited
US2334225A
Cited
US2534061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |