US2664781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic apparatus for correcting negatives during printing thereof
Assignee: HENRY BOOTH METHODS Corp
•
Filing: 1949-09-30
•
Granted: 1954-01-05
•
Expires: 1969-09-30
Abstract
No abstract record available.
Inventors
- 👤 Waller Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:07
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/326
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1113549A
Cited
US1713498A
Cited
US1654070A
Cited
US1652271A
Cited
US1565413A
Cited
US1910425A
Cited
US1778027A
Cited
US1911142A
Cited
US2207211A
Cited
US2262972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |