US2444531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chuck
Assignee: Polaroid Corp
•
Filing: 1946-01-05
•
Granted: 1948-07-06
•
Expires: 1966-01-05
Abstract
No abstract record available.
Inventors
- 👤 John H Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:50
CPC Classifications
B; B25; B25B; B25B11/00; B25B11/005; B23; B23B; B23B31/00; B23B31/02; B23B31/24; B23B31/30; B23B31/307; Y; Y10; Y10S; Y10S409/00; Y10S409/903; Y10T; Y10T279/00; Y10T279/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US873340A
Cited
US1228690A
Cited
US1456673A
Cited
US1408594A
Cited
US1448690A
Cited
US1574816A
Cited
US1588012A
Cited
US1984121A
Cited
US2321383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-06 | 1952-01-05 | 1952-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-06 | 1956-01-05 | 1956-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-06 | 1960-01-05 | 1960-07-06 | $7700.00 | Window Closed / Lapsed |