US2777032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snap switch and blade therefor
Assignee: BURCH PARKHURST ASSOCIATES
•
Filing: 1953-05-12
•
Granted: 1957-01-08
•
Expires: 1973-05-12
Abstract
No abstract record available.
Inventors
- 👤 Hadley K Burch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:59
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/52; H01H37/54; H01H37/5409
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL40704C
Cited
GB600055A
Cited
US2543040A
Cited
GB622781A
Cited
US2518361A
Cited
US2524411A
Cited
US2624819A
Cited
US2609466A
Cited
US2647189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |