US3374536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incapsulation of electrical units
Assignee: Sprague Electric Co
•
Filing: 1964-10-29
•
Granted: 1968-03-26
•
Expires: 1984-10-29
Abstract
No abstract record available.
Inventors
- 👤 Walter W Schroeder
- 👤 John H Fabricius
- 👤 Alphonse E Will
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:08
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/01; H10W74/40; H10W74/47; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2698372A
Cited
US2766510A
Cited
US2887558A
Cited
US3084391A
Cited
US3251918A
Cited
US3266463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |