US2810819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light projecting apparatus
Assignee: Individual
•
Filing: 1953-04-01
•
Granted: 1957-10-22
•
Expires: 1973-04-01
Abstract
No abstract record available.
Inventors
- 👤 Horace N Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:01
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/42; F16M11/02; F16M11/04; F16M11/06; F16M11/10; F16M11/18; F16M11/20; F16M11/24; F16M11/26; F16M11/28; F21; F21L; F21L14/00; F21L14/04; F21V; F21V21/00; F21V21/06; G; G03; G03B; G03B15/00; G03B15/02; F16M2200/00; F16M2200/02; F16M2200/021; F16M2200/024; F16M2200/06; F16M2200/066; F16M2200/08; F21W; F21W2131/00; F21W2131/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1430827A
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US2122416A
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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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |