US2561503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple wheel compartment projector
Assignee: Individual
•
Filing: 1948-07-07
•
Granted: 1951-07-24
•
Expires: 1968-07-07
Abstract
No abstract record available.
Inventors
- 👤 Ornellas Manuel L D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:12
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1313733A
Cited
USRE16769E
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GB201202A
Cited
GB225631A
Cited
US1802595A
Cited
US2227259A
Cited
US2214468A
Cited
US2256739A
Cited
US2319530A
Cited
US2434201A
Cited
US2416210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |