US2828666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overhead projector apparatus
Assignee: VICTORLITE IND Inc
•
Filing: 1956-01-09
•
Granted: 1958-04-01
•
Expires: 1976-01-09
Abstract
No abstract record available.
Inventors
- 👤 Gerald Harold G Fitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:47
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/132; Y; Y10; Y10S; Y10S353/00; Y10S353/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2079508A
Cited
US2330799A
Cited
US2310273A
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US2381260A
Cited
US2564057A
Cited
US2699704A
Cited
US2718171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |