US2623984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency electric heating apparatus
Assignee: United Shoe Machinery Corp
•
Filing: 1947-08-06
•
Granted: 1952-12-30
•
Expires: 1967-08-06
Abstract
No abstract record available.
Inventors
- 👤 Merwin F Ashley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:48
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; A; A43; A43D; A43D25/00; A43D25/06; A43D25/07; A43D25/20; B29C65/00; B29C65/02; B29C65/04; B29C65/78; B29C65/7841; B29C66/01; B29C66/05; B29C66/20; B29C66/24; B29C66/244; B29C66/301; B29C66/81; B29C66/812; B29C66/8126; B29C66/814; B29C66/8145; B29C66/81459; B29C66/81463; B29C66/84; B29C66/841; B29K; B29K2995/00; B29K2995/0003; B29K2995/0008; B29L; B29L2031/00; B29L2031/48; B29L2031/50; B29L2031/504
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB342419A
Cited
US2220269A
Cited
US2275430A
Cited
US2222615A
Cited
US2228136A
Cited
US2379059A
Cited
US2426267A
Cited
US2474977A
Cited
US2450956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |