Patent US2103538A successfully refreshed from Google Patents.
US2103538A
Expired / Lapsed
US
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Reflector
Assignee: Bausch and Lomb Inc
•
Filing: 1934-11-22
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Granted: 1937-12-28
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Expires: 1954-11-22
Abstract
No abstract record available.
Inventors
- 👤 Frank P Kolb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:20
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/22; F21V7/28; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/936; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12056; Y10T428/12063; Y10T428/12069; Y10T428/12076; Y10T428/12083; Y10T428/12104; Y10T428/12111; Y10T428/12118; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12556; Y10T428/12569; Y10T428/12597; Y10T428/12771; Y10T428/12861; Y10T428/12896; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-12-27 | 1941-06-28 | 1941-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-12-27 | 1945-06-28 | 1945-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-12-27 | 1949-06-28 | 1949-12-28 | $7700.00 | Window Closed / Lapsed |