US2760744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Standard constructions
Assignee: Individual
•
Filing: 1951-03-31
•
Granted: 1956-08-28
•
Expires: 1971-03-31
Abstract
No abstract record available.
Inventors
- 👤 Gilbert A Watrous
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:11
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/06; F21V21/14; F21V21/26; F16; F16C; F16C11/00; F16C11/04; F16C11/10; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T403/00; Y10T403/32; Y10T403/32008; Y10T403/32057; Y10T403/32606; Y10T403/32631
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |