US2705436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Micro-reproduction projection cards
Assignee: Individual
•
Filing: 1951-06-28
•
Granted: 1955-04-05
•
Expires: 1971-06-28
Abstract
No abstract record available.
Inventors
- 👤 Donald B Bradner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:20
CPC Classifications
G; G03; G03D; G03D15/00; G03D15/10; G03B; G03B21/00; G03B21/54; G03B21/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US713813A
Cited
US1158429A
Cited
US1691090A
Cited
US1888054A
Cited
US2326042A
Cited
US2260551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-04 | 1958-10-04 | 1959-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-04 | 1962-10-04 | 1963-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-04 | 1966-10-04 | 1967-04-05 | $7700.00 | Window Closed / Lapsed |