US2706930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection screen
Assignee: Hartford National Bank and Trust Co
•
Filing: 1948-08-04
•
Granted: 1955-04-26
•
Expires: 1968-08-04
Abstract
No abstract record available.
Inventors
- 👤 Jansen Pieter Cornelis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:04
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/60; G03B21/62; G03B21/625; Y; Y10; Y10T; Y10T409/00; Y10T409/50; Y10T409/500164; Y10T409/500328; Y10T409/500492
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US670438A
Cited
US1942841A
Cited
US2137358A
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US2219158A
Cited
US2258164A
Cited
FR831451A
Cited
US2207835A
Cited
US2321441A
Cited
US2480031A
Cited
US2510344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-25 | 1958-10-25 | 1959-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-25 | 1962-10-25 | 1963-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-25 | 1966-10-25 | 1967-04-26 | $7700.00 | Window Closed / Lapsed |