Patent US3051040A successfully refreshed from Google Patents.
US3051040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection cabinet
Assignee: Individual
•
Filing: 1959-04-03
•
Granted: 1962-08-28
•
Expires: 1979-04-03
Abstract
No abstract record available.
Inventors
- 👤 Hubert J Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:23
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1918468A
Cited
US1954787A
Cited
US1954786A
Cited
AT147595B
Cited
US2231395A
Cited
US2322023A
Cited
US2566830A
Cited
US2498895A
Cited
US2863356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |